Patent US3281378A successfully refreshed from Google Patents.
US3281378A
Expired / Lapsed
US
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Diisocyanato substituted aliphatic carboxylic acid ester urethane reaction products
Assignee: Merck and Co Inc
•
Filing: 1963-06-06
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Granted: 1966-10-25
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Expires: 1983-06-06
Abstract
No abstract record available.
Inventors
- 👤 Garber John Douglas
- 👤 Wasserman David
- 👤 Gasser Robert Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:26
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/771; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE REACTION PRODUCT OF A DIISOCYANATE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
THE REACTION PRODUCT OF A DIISOCYANATE COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |