This application is related to (1) U.S. Design application Ser. No. 29/405,113, filed Oct. 28, 2011; (2) U.S. Design application Ser. No. 29/405,117, filed Oct. 28, 2011; (3) U.S. Design application Ser. No. 29/405,121, filed Oct. 28, 2011; (4) U.S. Design application Ser. No. 29/405,122, filed Oct. 28, 2011; (5) U.S. Design application Ser. No. 29/405,124, filed Oct. 28, 2011; (6) U.S. Design application Ser. No. 29/405,133, filed Oct. 28, 2011, the entire disclosures of which are incorporated herein by reference.
FIG. 1 is a perspective view of a casing centralizer showing our new design according to a first embodiment;
FIG. 2 is an elevational view of the first embodiment;
FIG. 3 is a top plan view of the first embodiment, the bottom plan view of the first embodiment being identical to the top plan view of the first embodiment;
FIG. 4 is a sectional view of the first embodiment taken along line 4-4 of FIG. 3;
FIG. 5 is an elevational view of the casing centralizer according to a second embodiment, the second embodiment being identical to the first embodiment except that the second embodiment has one indeterminate length as indicated in FIG. 5; and,
FIG. 6 is a top plan view of the casing centralizer according to a third embodiment, the third embodiment being identical to the first embodiment except that the third embodiment has six indeterminate lengths as indicated in FIG. 6.
	
	  
 	  	 | Patent | Priority | Assignee | Title | 
	      
	 | 1460832, |  |  |  | 
    
	 | 1767198, |  |  |  | 
    
	 | 1807050, |  |  |  | 
    
	 | 2166116, |  |  |  | 
    
	 | 2602512, |  |  |  | 
    
	 | 2659439, |  |  |  | 
    
	 | 2715552, |  |  |  | 
    
	 | 2943009, |  |  |  | 
    
	 | 3052310, |  |  |  | 
    
	 | 3080926, |  |  |  | 
    
	 | 3125382, |  |  |  | 
    
	 | 3128827, |  |  |  | 
    
	 | 3145785, |  |  |  | 
    
	 | 3289767, |  |  |  | 
    
	 | 3292708, |  |  |  | 
    
	 | 3320004, |  |  |  | 
    
	 | 3410613, |  |  |  | 
    
	 | 3528499, |  |  |  | 
    
	 | 3613783, |  |  |  | 
    
	 | 3762472, |  |  |  | 
    
	 | 3933203, | Mar 27 1975 |  | Centralizer for production string including support means for control lines | 
    
	 | 3955625, | Mar 06 1975 | DOWELL SCHLUMBERGER INCORPORATED, | Cementing basket | 
    
	 | 3963075, | Mar 27 1975 |  | Centralizer for elastomer coated blast joint | 
    
	 | 4050514, | Sep 03 1976 | The Steel Company of Canada, Limited | Paraffin sucker rod scraper and rod centralizer | 
    
	 | 4088185, | Aug 10 1973 | J. M. Huber Corporation | Molded plastic paraffin scrapers and centralizers | 
    
	 | 4146060, | Jul 25 1977 | Smith International, Inc. | Drill pipe wear belt assembly | 
    
	 | 4275935, | Jul 17 1979 | DIAMANT BOART STRATABIT S A , A BELGIAN CORP | Drilling stabilizer | 
    
	 | 4372562, | Sep 09 1981 | HALLIBURTON COMPANY, A CORP OF DE | Inflatable packer with liquid resin anchored reinforcing sheath | 
    
	 | 4396234, | Apr 06 1981 | GARRETT, WILLIAM R | Weldable blade stabilizer | 
    
	 | 4436118, | Jul 25 1977 | SMITH INTERNATIONAL INC A DE CORP | Sleeved drill pipe | 
    
	 | 4595058, | Aug 28 1984 | Shell Oil Company | Turbulence cementing sub | 
    
	 | 4658896, | Aug 16 1985 |  | Apparatus for a tubular string and method of attaching the same thereto | 
    
	 | 4757861, | Aug 06 1987 | NATIVE VENTURE CAPITAL CO  LTD , A BODY CORPORATE UNDER THE LAW OF CANADA | Oil well sucker rod coupling assembly | 
    
	 | 4796670, | Oct 15 1987 | Exxon Production Research Company; EXXON PRODUCTION RESEARCH COMPANY, A CORP  OF DE | Drill pipe protector | 
    
	 | 4825947, | Oct 30 1986 |  | Apparatus for use in cementing a casing string within a well bore | 
    
	 | 4858688, | Jun 27 1988 |  | Sucker rod guide | 
    
	 | 4919202, | Feb 08 1989 |  | Sucker rod guide bearing | 
    
	 | 4938299, | Jul 27 1989 | BAROID TECHNOLOGY, INC | Flexible centralizer | 
    
	 | 4984633, | Oct 20 1989 | WEATHERFORD U S  INC , A CORP  OF DE | Nozzle effect protectors, centralizers, and stabilizers and related methods | 
    
	 | 5095981, | Feb 22 1985 |  | Casing centralizer | 
    
	 | 5115863, | Apr 05 1991 | ROBBINS & MYERS ENERGY SYSTEMS, L P | Low turbulence rod guide | 
    
	 | 5179140, | Dec 27 1988 | TUBOSCOPE I P INC | Filled resin compositions and articles made therefrom | 
    
	 | 5191938, | Dec 16 1991 | FLOW CONTROL EQUIPMENT, INC | Rod guide assembly and method of its installation on a rod shank | 
    
	 | 5247990, | Mar 12 1992 | ROBBINS & MYERS ENERGY SYSTEMS, L P | Centralizer | 
    
	 | 5277254, | Mar 28 1991 | ROBBINS & MYERS ENERGY SYSTEMS, L P | Helical rod guide | 
    
	 | 5332049, | Sep 29 1992 | Hexagon Technology AS | Composite drill pipe | 
    
	 | 5339896, | May 06 1993 | ROBBINS & MYERS ENERGY SYSTEMS, L P | Field installable rod guide and method | 
    
	 | 5492174, | May 26 1993 | ROBBINS & MYERS ENERGY SYSTEMS, L P | Rod guide with enhanced erodable volume | 
    
	 | 5692562, | Apr 13 1995 | ROBBINS & MYERS ENERGY SYSTEMS, L P | Well rod, centralizer and centralizer stop interfaces with wear reducing surface | 
    
	 | 5697442, | Nov 13 1995 | Halliburton Company | Apparatus and methods for use in cementing a casing string within a well bore | 
    
	 | 5740862, | Jan 17 1995 |  | Rod guide assembly | 
    
	 | 5797455, | Mar 12 1994 | Downhole Products Limited | Casing centraliser | 
    
	 | 5860760, | Aug 12 1994 | Downhole Products Limited | Gripping device | 
    
	 | 5908072, | May 02 1997 | ANTELOPE OIL TOOL & MFG  CO , LLC | Non-metallic centralizer for casing | 
    
	 | 5937948, | Jan 15 1998 | RAY OIL TOOL COMPANY, INC | Extruded casing centralizer | 
    
	 | 6006830, | Mar 12 1994 | Downhole Products Limited | Casing centraliser | 
    
	 | 6102118, | Dec 30 1998 |  | Multi-purpose adjustable centralizer system with tool | 
    
	 | 6435275, | Aug 23 1999 | Downhole Products Limited | Casing centralizer | 
    
	 | 6439304, | Feb 05 1999 | FORUM US, INC | Stand-off device | 
    
	 | 6585052, | May 30 2000 | NABORS DRILLING TECHNOLOGIES USA, INC | Casing centralizer | 
    
	 | 6659173, | Jan 24 1998 | Downhole Products Limited | Downhole tool | 
    
	 | 6666267, | Nov 15 1997 | TERCEL IP LIMITED | Downhole tools | 
    
	 | 6830102, | Jan 22 2000 | Downhole Products Limited | Centraliser | 
    
	 | 6845816, | Mar 10 2000 | Downhole Products Limited | ADI centralizer | 
    
	 | 7082997, | Jun 15 2001 | NABORS DRILLING TECHNOLOGIES USA, INC | Pipe centralizer and method of attachment | 
    
	 | 7096939, | Mar 16 2002 | Downhole Products Limited | Slotted expandable centraliser | 
    
	 | 7159668, | Jun 21 2000 | DEEP CASING TOOLS LIMITED | Centralizer | 
    
	 | 7357178, | Jun 30 2000 | TERCEL IP LIMITED | In and relating to downhole tools | 
    
	 | 7409758, | Oct 29 2003 | WEATHERFORD TECHNOLOGY HOLDINGS, LLC | Vibration damper systems for drilling with casing | 
    
	 | 7604059, | Jun 30 2000 | TERCEL IP LIMITED | Downhole tools | 
    
	 | 7694733, | Jan 18 2005 | Downhole Products plc | Centralizer | 
    
	 | 7814633, | Sep 23 2002 | NABORS DRILLING TECHNOLOGIES USA, INC | Pipe centralizer and method of forming | 
    
	 | 8167034, | Jun 19 2008 | Offshore Manufacturing & Design, LLC | Device for centering a well casing | 
    
	 | 20010032722, |  |  |  | 
    
	 | 20020023749, |  |  |  | 
    
	 | 20030164236, |  |  |  | 
    
	 | 20060070731, |  |  |  | 
    
	 | 20080164019, |  |  |  | 
    
	 | 20100059218, |  |  |  | 
    
	 | CA1032867, |  |  |  | 
    
	 | CA1154380, |  |  |  | 
    
	 | EP138603, |  |  |  | 
    
	 | EP297716, |  |  |  | 
    
	 | EP671546, |  |  |  | 
    
	 | EP333450, |  |  |  | 
    
	 | GB2016063, |  |  |  | 
    
	 | GB2171436, |  |  |  | 
    
	 | GB2226520, |  |  |  | 
    
	 | GB2233690, |  |  |  | 
    
	 | GB2249333, |  |  |  | 
    
	 | GB2275284, |  |  |  | 
    
	 | GB2282615, |  |  |  | 
    
	 | GB2285649, |  |  |  | 
    
	 | GB2288198, |  |  |  | 
    
	 | GB2304753, |  |  |  | 
    
	 | GB2329209, |  |  |  | 
    
	 | GB682362, |  |  |  | 
    
	 | WO9105936, |  |  |  | 
    
	 | WO9510685, |  |  |  | 
    
	 | WO9521986, |  |  |  | 
    
	 | WO9634173, |  |  |  | 
    
	 | WO9837302, |  |  |  | 
    
	 | WO9925949, |  |  |  | 
	
	
	  
	  	 | Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
	  | Oct 28 2011 |  | Top-Co Cementing Products Inc. | (assignment on the face of the patent) | / |  | 
    
| Dec 21 2011 | SANCHEZ, ALFREDO | TOP-CO CEMENTING PRODUCTS INC | ASSIGNMENT OF ASSIGNORS INTEREST  SEE DOCUMENT FOR DETAILS | 027501/ | 0493 | pdf | 
    
| Dec 21 2011 | ANDRIGO, GREGORY | TOP-CO CEMENTING PRODUCTS INC | ASSIGNMENT OF ASSIGNORS INTEREST  SEE DOCUMENT FOR DETAILS | 027501/ | 0493 | pdf | 
    
| Dec 20 2019 | GJS HOLDING COMPANY LLC | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Dec 20 2019 | XDHT LLC | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Dec 20 2019 | LOGAN JAR, LLC | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Dec 20 2019 | TERCEL OILFIELD PRODUCTS HOLDINGS USA L L C | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Dec 20 2019 | LOGAN HOLDINGS LLC | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Dec 20 2019 | TERCEL OILFIELD PRODUCTS USA L L C | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Dec 20 2019 | TOP-CO CEMENTING PRODUCTS LLC | TERCEL OILFIELD PRODUCTS USA L L C | MERGER  SEE DOCUMENT FOR DETAILS | 055702/ | 0141 | pdf | 
    
| Mar 10 2021 | Quick Connectors, Inc | PNC Bank, National Association | SUPPLEMENT NO  1 TO AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 055598/ | 0721 | pdf | 
    
| Mar 10 2021 | INNOVEX DOWNHOLE SOLUTIONS, INC | PNC Bank, National Association | SUPPLEMENT NO  1 TO AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 055598/ | 0721 | pdf | 
    
| Mar 10 2021 | INNOVEX ENERSERV ASSETCO, LLC | PNC Bank, National Association | SUPPLEMENT NO  1 TO AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 055598/ | 0721 | pdf | 
    
| Mar 10 2021 | TOP-CO INC | PNC Bank, National Association | SUPPLEMENT NO  1 TO AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 055598/ | 0721 | pdf | 
    
| Mar 10 2021 | TERCEL OILFIELD PRODUCTS USA L L C | PNC Bank, National Association | SUPPLEMENT NO  1 TO AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 055598/ | 0721 | pdf | 
    
| Jun 10 2022 | TOP-CO INC | PNC Bank, National Association | SECOND AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 060438/ | 0932 | pdf | 
    
| Jun 10 2022 | INNOVEX DOWNHOLE SOLUTIONS, INC | PNC Bank, National Association | SECOND AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 060438/ | 0932 | pdf | 
    
| Jun 10 2022 | TERCEL OILFIELD PRODUCTS USA L L C | PNC Bank, National Association | SECOND AMENDED AND RESTATED TRADEMARK AND PATENT SECURITY AGREEMENT | 060438/ | 0932 | pdf | 
    
| Dec 19 2024 | TOP-CO INC | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 069746/ | 0780 | pdf | 
    
| Dec 19 2024 | TERCEL OILFIELD PRODUCTS USA L L C | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 069746/ | 0780 | pdf | 
    
| Dec 19 2024 | INNOVEX INTERNATIONAL, INC | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 069746/ | 0780 | pdf | 
    
| Dec 19 2024 | INNOVEX DOWNHOLE SOLUTIONS, LLC | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 069746/ | 0780 | pdf | 
    
| Mar 25 2025 | INNOVEX DOWNHOLE SOLUTIONS, LLC | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 070692/ | 0509 | pdf | 
    
| Mar 25 2025 | INNOVEX INTERNATIONAL, INC | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 070692/ | 0509 | pdf | 
    
| Mar 25 2025 | TERCEL OILFIELD PRODUCTS USA L L C | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 070692/ | 0509 | pdf | 
    
| Mar 25 2025 | DOWNHOLE WELL SOLUTIONS, LLC | PNC Bank, National Association | SECURITY INTEREST  SEE DOCUMENT FOR DETAILS | 070692/ | 0509 | pdf |