Mechanism to raise and lower the height of keys within a keyboard
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 19, 2017
Grant Date -
Dec 14, 2017
app pub date -
Jul 26, 2016
filing date -
Jun 8, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A key structure includes a supporting plate, a keycap, a scissors-type connecting element, a movable element and a coupling structure. The keycap is disposed over the supporting plate. The coupling structure is connected with the scissors-type connecting element and the movable element. For operating the key structure, the cooperation of the movable element and the coupling structure allows the keycap to be at a higher first height. Consequently, the tactile feel of depressing the key structure is enhanced. Moreover, the cooperation of the movable element and the coupling structure can lower the height of the keycap. Consequently, the key structure has a slim appearance.
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 | |
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PRIMAX ELECTRONICS LTD | NO 669 RUEY KUANG ROAD NEIHU TAIPEI 114 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Yang, Che-Wei | Taipei, TW | 39 | 63 |
# of filed Patents : 39 Total Citations : 63 |
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Patent Citation Ranking
- 1 Citation Count
- H01H Class
- 20.21 % this patent is cited more than
- 8 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 19, 2025 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 19, 2029 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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

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Aug 18, 2016 | AS | ASSIGNMENT | free format text: CONVERSION;ASSIGNOR:ISP INVESTMENTS INC.;REEL/FRAME:041556/0499 Owner name: ISP INVESTMENTS LLC, DELAWARE Effective Date: Aug 18, 2016 |
Apr 25, 2016 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Mar 30, 2016 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Mar 30, 2016 |
Mar 30, 2016 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Nov 06, 2015 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Mar 14, 2013 | AS� | SECURITY INTEREST | free format text: RELEASE OF PATENT SECURITY AGREEMENT;ASSIGNOR:THE BANK OF NOVA SCOTIA;REEL/FRAME:030025/0320 Owner name: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC, OHIO Effective Date: Mar 14, 2013 free format text: RELEASE OF PATENT SECURITY AGREEMENT;ASSIGNOR:THE BANK OF NOVA SCOTIA;REEL/FRAME:030025/0320 Owner name: ISP INVESTMENTS INC., DELAWARE Effective Date: Mar 14, 2013 free format text: RELEASE OF PATENT SECURITY AGREEMENT;ASSIGNOR:THE BANK OF NOVA SCOTIA;REEL/FRAME:030025/0320 Owner name: HERCULES INCORPORATED, DELAWARE Effective Date: Mar 14, 2013 free format text: RELEASE OF PATENT SECURITY AGREEMENT;ASSIGNOR:THE BANK OF NOVA SCOTIA;REEL/FRAME:030025/0320 Owner name: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC, O Effective Date: Mar 14, 2013 free format text: RELEASE OF PATENT SECURITY AGREEMENT;ASSIGNOR:THE BANK OF NOVA SCOTIA;REEL/FRAME:030025/0320 Owner name: AQUALON COMPANY, DELAWARE Effective Date: Mar 14, 2013 |
Sep 20, 2011 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Aug 23, 2011 | AS | ASSIGNMENT | free format text: PATENT RELEASE;ASSIGNOR:JPMORGAN CHASE BANK, N.A. (F/K/A THE CHASE MANHATTAN BANK);REEL/FRAME:026930/0774 Owner name: ISP CAPITAL, INC., NEW JERSEY Effective Date: Aug 23, 2011 free format text: PATENT RELEASE;ASSIGNOR:JPMORGAN CHASE BANK, N.A. (F/K/A THE CHASE MANHATTAN BANK);REEL/FRAME:026930/0774 Owner name: VERONA, INC., NEW JERSEY Effective Date: Aug 23, 2011 free format text: PATENT RELEASE;ASSIGNOR:JPMORGAN CHASE BANK, N.A. (F/K/A THE CHASE MANHATTAN BANK);REEL/FRAME:026930/0774 Owner name: ISP CHEMICAL PRODUCTS, INC., NEW JERSEY Effective Date: Aug 23, 2011 |
Aug 23, 2011 | AS | ASSIGNMENT | free format text: SECURITY AGREEMENT;ASSIGNORS:ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC;HERCULES INCORPORATED;AQUALON COMPANY;AND OTHERS;REEL/FRAME:026918/0052 Owner name: THE BANK OF NOVA SCOTIA, AS ADMINISTRATIVE AGENT, Effective Date: Aug 23, 2011 |
Aug 28, 2007 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Mar 30, 2004 | I | Issuance | |
Oct 31, 2003 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
May 23, 2002 | P | Published | |
Jun 15, 2001 | F | Filing | |
Jun 15, 2001 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HOOD, DAVID K.;KOPOLOW, STEPHEN L.;TALLON, MICHAEL;AND OTHERS;REEL/FRAME:011917/0625;SIGNING DATES FROM 20010612 TO 20010614 Owner name: ISP INVESTMENTS INC., DELAWARE |
Sep 15, 2000 | PD | Priority Date |

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