Patent
   D854161
Priority
May 15 2018
Filed
May 15 2018
Issued
Jul 16 2019
Expiry
Jul 16 2034
Assg.orig
Entity
unknown
14
14
n/a
The ornamental design for a medical oxygen concentrator, as shown and described.

FIG. 1 is a front perspective view of a medical oxygen concentrator showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines are directed to environment and form no part of the claimed design. The unshaded surface that directly adjoins the claimed solid line edge forms no part of the claimed design.

Suda, Masanori, Hirano, Taku, Hatta, Keisuke, Nii, Keiko

Patent Priority Assignee Title
D923667, Mar 26 2018 PHC HOLDINGS CORPORATION Control panel for medical refrigerator
D982162, Aug 22 2022 Portable oxygen concentrator
ER1154,
ER1439,
ER2813,
ER3325,
ER3950,
ER4170,
ER5279,
ER535,
ER5855,
ER7345,
ER9018,
ER9701,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
May 15 2018NGK Spark Plug Co., Ltd.(assignment on the face of the patent)
Jul 17 2018SUDA, MASANORINGK SPARK PLUG CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0465220607 pdf
Jul 17 2018HIRANO, TAKUNGK SPARK PLUG CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0465220607 pdf
Jul 17 2018HATTA, KEISUKENGK SPARK PLUG CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0465220607 pdf
Jul 17 2018NII, KEIKONGK SPARK PLUG CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0465220607 pdf
Jun 30 2023NGK SPARK PLUG CO , LTD NITERRA CO , LTD CHANGE OF NAME SEE DOCUMENT FOR DETAILS 0648420215 pdf
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