US2977329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber composition containing an amidine nitrite and method of preparing cellular product therefrom
Assignee: Wyeth Holdings LLC
•
Filing: 1957-06-25
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Granted: 1961-03-28
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Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Hans Z Lecher
- 👤 Frederic H Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08K; C08K5/00; C08K5/16; C08K5/29; C08J2201/00; C08J2201/02; C08J2201/024; C08J2321/00; C08L; C08L2203/00; C08L2203/14; C08L23/00; C08L23/02; C08L23/04; C08L23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A PROCESS OF PRODUCING A CELLULAR RUBBER WHICH COMPRISES FORMING AN UNCURED, CURABLE RUBBER STOCK CONTAINING AN AMIDINE NITRITE OF THE FORMULA
Claim 2
Dependent Claim
22 words
A PROCESS OF PRODUCING A CELLULAR RUBBER WHICH COMPRISES FORMING AN UNCURED, CURABLE RUBBER STOCK CONTAINING AN AMIDINE NITRITE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |