US3707486A
Expired / Lapsed
US
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Triphenylmethane tetraisocyanate derivatives
Assignee: Bayer AG
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Filing: 1969-11-24
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Granted: 1972-12-26
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Expires: 1989-11-24
Abstract
Abstract COMPOSITIONS USEFUL AS ADHESIVES HAVING IMPROVED BONDING CHARACTERISTICS ARE PREPARED FROM NATURAL OR SYNTHETIC RUBBER BINDERS AND A DIPHENYLMETHANE TETRAISOCYANATE DERIVATIVE.
Inventors
- 👤 Gunter Oertel
- 👤 Hans Holtschmidt
- 👤 Manfred Dollhausen
- 👤 Eugen Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:21
CPC Classifications
C; C09; C09J; C09J121/00; C07; C07C; C07C265/00; C07C265/12; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/67; C08G18/69; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C08G18/7671; C09J175/00; C08K; C08K5/00; C08K5/16; C08K5/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |