Door lock device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 16, 1993
Grant Date -
N/A
app pub date -
Mar 19, 1992
filing date -
Mar 29, 1991
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Non-US Coverage
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Patent Longevity
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Forward Citations
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Abstract
A door lock device which comprises a structural base body by which a latch plate and a control mechanism for the latch plate are operatively carried; and a cover plate attached to the structural base body in a manner to cover the latch plate. The cover plate includes larger and smaller flat portions which are mutually intersected and the cover plate has an enclosed aperture which extends between the larger and smaller flat portions and through which the latch plate is exposed.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
OHI SEISAKUSHO CO LTD | YOKOHAMA-SHI KANAGAWA-KEN 235 |
International Classification(s)

- 1992 Application Filing Year
- E05C Class
- 168 Applications Filed
- 70 Patents Issued To-Date
- 41.67 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Miyagawa, Masazumi | Yokohama, JP | 10 | 184 |
# of filed Patents : 10 Total Citations : 184 | |||
Nakamura, Hitoshi | Yokohama, JP | 260 | 2790 |
# of filed Patents : 260 Total Citations : 2790 | |||
Takaishi, Tatsuyuki | Yokohama, JP | 8 | 195 |
# of filed Patents : 8 Total Citations : 195 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 14 Citation Count
- E05C Class
- 74.25 % this patent is cited more than
- 32 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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Apr 25, 2022 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Apr 25, 2022 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Mar 20, 2022 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Mar 20, 2022 |
Nov 08, 2021 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Jul 17, 2018 | CC | CERTIFICATE OF CORRECTION | |
Mar 20, 2018 | I | Issuance | |
Feb 28, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 30, 2018 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAKE, SARAH C.;REEL/FRAME:044781/0187 Owner name: THE UNITED STATES OF AMERICA, AS REPRESENTED BY TH Effective Date: Jan 30, 2018 |
Sep 19, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PAULY, MARKUS;KRAEMER, FLORIAN J.;HAKE, SARAH;SIGNING DATES FROM 20140227 TO 20140402;REEL/FRAME:039784/0535 Owner name: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, CALIF |
Aug 19, 2016 | AS | ASSIGNMENT | free format text: CONFIRMATORY LICENSE;ASSIGNOR:CALIFORNIA BERKELEY UNIVERSITY OF;REEL/FRAME:041328/0447 Owner name: ENERGY, UNITED STATES DEPARTMENT OF, DISTRICT OF C Effective Date: Aug 19, 2016 |
Dec 11, 2014 | P | Published | |
Jun 01, 2012 | F | Filing |

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