US3756845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving adhesion of polyurethane coatings to substrates
Assignee: BASF Corp
•
Filing: 1971-04-27
•
Granted: 1973-09-04
•
Expires: 1991-04-27
Abstract
Abstract MASONRY PRODUCTS AND OTHER SUBSTANCES PRIMED WITH AN ORGANIC ISOCYANATE PRIOR TO APPLYING A URETHANE COMPOSITION THEREON EXHIBIT IMPROVED ADHESION, A WATER RESISTANT BOND, 100% COHESIVE FAILURE, AND 0% ADHESIVE FAILURE.
Inventors
- 👤 R Zasadny
- 👤 J Gallagher
- 👤 H Trix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:51
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; B05D7/26; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/70; C08G18/72; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31598
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |