Door
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 22, 1991
Issued Date -
N/A
app pub date -
Apr 10, 1990
filing date -
Dec 23, 1987
priority date (Note) -
Expired
status (Latency Note)
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Importance

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Abstract
The door has a separate seal element and a hollow profile frame. The hollow profile frame has a number of tappets extending therefrom to press the seal element against a door frame. These tappets are applied individually to the seal element by pressure from a pneumatic hose within the hollow profile frame which applies pressure to the tappets.
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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RUHRKOHLE AG | ESSEN FEDERAL REPUBLIC OF GERMANY ESSEN NORTH RHINE-WESTPHALIA |
International Classification(s)

- 1990 Application Filing Year
- E06B Class
- 249 Applications Filed
- 4 Patents Issued To-Date
- 1.61 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Stewen, Wilhelm | Oberhausen, DE | 13 | 175 |
# of filed Patents : 13 Total Citations : 175 | |||
Wessiepe, Klaus | Essen, DE | 6 | 17 |
# of filed Patents : 6 Total Citations : 17 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 3 Citation Count
- E06B Class
- 0 % this patent is cited more than
- 34 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 |
---|---|---|---|
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 |
---|---|---|---|
Jan 28, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jan 25, 1995 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jan 25, 1995 |
Jan 22, 1995 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Aug 30, 1994 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Nov 24, 1992 | CC | CERTIFICATE OF CORRECTION | |
Jan 22, 1991 | I | Issuance | |
Apr 10, 1990 | F | Filing | |
Dec 23, 1987 | PD | Priority Date |

Matter Detail

Renewals Detail
