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Patent
   D828415
Priority
Jul 14 2016
Filed
Jan 12 2017
Issued
Sep 11 2018
Expiry
Sep 11 2033
Inventors
Ota, Hiros…
Assg.orig
Mitsubishi…
Assg.curr
MMC RYOTEC…
Entity
unknown
Referenced by
18
References
51
Maint.:
n/a
The ornamental design for a drill bit tip, as shown and described.

FIG. 1 is a perspective view of a drill bit tip.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a right side elevation view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

FIG. 8 is an enlarged detailed perspective view of FIG. 1.

The broken lines in the drawings depict unclaimed environmental subject matter.
INVENTORS:

Ota, Hiroshi, Tomita, Yasutaka

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
11655681, Dec 06 2018 Halliburton Energy Services, Inc.; Halliburton Energy Services, Inc Inner cutter for drilling
D861051, Mar 13 2018 ROBIT OYJ Drill bit
D870168, Mar 13 2018 ROBIT OYJ Drill bit
D875147, May 10 2018 SEED TECHNOLOGIES CORP., LTD. Drill bit
D894979, Mar 01 2019 Boart Longyear Company Drill bit
D894980, Mar 01 2019 Boart Longyear Company Drill bit
D894981, Mar 01 2019 Boart Longyear Company Drill bit
D911399, Dec 06 2018 Halliburton Energy Services, Inc.; Halliburton Energy Services, Inc Innermost cutter for a fixed-cutter drill bit
D934318, Apr 29 2020 CHINA PACIFICARBIDE, INC Milling bit
D940768, Apr 29 2020 CHINA PACIFICARBIDE, INC Milling bit
D941375, Apr 29 2020 CHINA PACIFICARBIDE, INC Milling bit
D959519, Apr 29 2020 CHINA PACIFICARBIDE, INC Milling bit
D967880, Apr 29 2020 China Pacificarbide, Inc. Milling bit
D969184, Apr 29 2020 China Pacificarbide, Inc. Milling bit
D969890, Apr 29 2020 China Pacificarbide, Inc. Milling bit
ER2870,
ER8384,
ER9641,
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
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4304312, Jan 11 1980 SANTRADE LTD , A CORP OF SWITZERLAND Percussion drill bit having centrally projecting insert
4572307, Apr 05 1983 Santrade Limited Rock drill
4607712, Dec 19 1983 Santrade Limited Rock drill bit
4705124, Aug 22 1986 Minnesota Mining and Manufacturing Company; MINNESOTA MINING AND MANUFACTURING COMPANY, A CORP OF DE Cutting element with wear resistant crown
4716976, Oct 28 1986 KENNAMETAL PC INC Rotary percussion drill bit
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5588497, Feb 14 1995 Galison Drilling (Proprietary) Limited Mounting drill buttons
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ASSIGNMENT RECORDS    Assignment records on the USPTO
////
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jan 12 2017Mitsubishi Materials Corporation(assignment on the face of the patent)
Feb 21 2017OTA, HIROSHIMitsubishi Materials CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0421260576 pdf
Feb 21 2017TOMITA, YASUTAKAMitsubishi Materials CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0421260576 pdf
Aug 30 2021Mitsubishi Materials CorporationMMC RYOTEC CORPORATIONASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0575580087 pdf
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