Patent US3108084A successfully refreshed from Google Patents.
US3108084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blocked aromatic diisocyanate curing agents
Assignee: Sherwin Williams Co
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Filing: 1958-01-06
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Granted: 1963-10-22
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Expires: 1978-01-06
Abstract
No abstract record available.
Inventors
- 👤 Lynwood N Whitehill
- 👤 Jr Austin C Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8064
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
8 words
A COMPOSITION OF MATTER HAVING THE GENERAL STRUCTURE:
Claim 2
Dependent Claim
8 words
A COMPOSITION OF MATTER HAVING THE GENERAL STRUCTURE:
Claim 3
Dependent Claim
76 words
A METHOD OF CURING LABILE HYDROGEN ATOM CONTAINING POLYMERS BY COMBINING THEREWITH A QUANTITY OF THE COMPOSITION OF CLAIM 1 SUCH THAT ONE HALF OF THE URETHANE GROUPS THEREOF ARE FROM 75% TO ABOUT 125% OF THE STOICHIOMETRIC EQUIVALENT OF SAID REACTIVE HYDROGEN ATOMS, AND AT A TIME SUBSEQUENT TO THE ADDITION, HEATING THE ADMIXTURE IN A FILM TO A TEMPERATURE AND FOR A TIME SUCH THAT SUBSTANTIALLY ALL VOLATILIZATION OF ALCOHOL FROM SAID FILM CEASES.
References Cited (Backward Citations)
US2374136A
Cited
US2449613A
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GB717408A
Cited
US2683728A
Cited
US2703810A
Cited
US2797232A
Cited
US2789128A
Cited
US2801231A
Cited
US2941983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-21 | 1967-04-22 | 1967-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-21 | 1971-04-22 | 1971-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-21 | 1975-04-22 | 1975-10-22 | $7700.00 | Window Closed / Lapsed |