Catalyst system for the NCO/OH reaction (polyurethane formation)
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 5, 2003
Grant Date -
N/A
app pub date -
Jun 26, 2000
filing date -
Jul 2, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to a catalyst system for the production of polyurethane comprising catalysts for polyurethane formation and sterically hindered carbodiimides, which system is capable of lessening the 'fogging' problem in the production of polyurethane materials, without impairing in particular the aging properties of the polyurethane materials thus produced.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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RHEIN CHEMIE RHEINAU GMBH | 68219 MANNHEIM |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Heiliger, Ludger | Neustadt, DE | 38 | 377 |
# of filed Patents : 38 Total Citations : 377 | |||
Montag, Reinhard | Ketsch, DE | 1 | 3 |
# of filed Patents : 1 Total Citations : 3 |
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Patent Citation Ranking
- 3 Citation Count
- C08G Class
- 9.02 % this patent is cited more than
- 22 Age
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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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Jan 26, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Aug 20, 2004 | FP | EXPIRED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Aug 20, 2004 |
Aug 20, 2004 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Mar 10, 2004 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Feb 02, 2000 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Oct 29, 1996 | CC | CERTIFICATE OF CORRECTION | |
Aug 20, 1996 | I | Issuance | |
Feb 15, 1994 | F | Filing | |
Feb 15, 1994 | PD | Priority Date | |
Feb 08, 1994 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RHOADES, GEORGE D.;REEL/FRAME:006881/0502 Owner name: LIQUID CARBONIC CORPORATION, ILLINOIS Effective Date: Feb 08, 1994 |

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