US3644569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-part adhesives comprising an isocyanate terminated prepolymer an isocyanate reactive monomer and an unsaturated polyester
Assignee: Wyeth Holdings LLC
•
Filing: 1968-11-19
•
Granted: 1972-02-22
•
Expires: 1988-11-19
Abstract
Abstract A TWO-PART ADHESIVE COMPRISING (1) A SAURATED POLYETHER OR POLYESTER-BASED. NCO TERMINATED POLYURETHANE RESIN AND A PEROXIDE CATALYST AND (2) AN UNSATURATED POLYESTER RESIN AND A CROSS-LINKING MONOMER CONTAINING AN NCO REACTIVE GROUP, IS DISCLOSED.
Inventors
- 👤 Gerhard Joseph Pietsch
- 👤 Armand Francis Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:50
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/68; C09; C09J; C09J175/00; C09J175/04; Y; Y10; Y10S; Y10S528/00; Y10S528/905; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |