Patent US2930779A successfully refreshed from Google Patents.
US2930779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of a polymer of a vinylene ester and a nitrogenous compound
Assignee: Wyeth Holdings LLC
•
Filing: 1954-05-13
•
Granted: 1960-03-29
•
Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Erhart K Drechsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:23
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A COMPOSITION COMPRISING THE PRODUCT OF REACTION OF INGREDIENTS COMPRISING (1) A POLYMER OF VINYLENE CARBONATE CONTAINING AT LEAST 10 MOLE PERCENT OF COMBINED VINYLENE CARBONATE AND UP TO 90 MOLE PERCENT OF A DIFFERENT COMPOUND WHICH IS COPOLYMERIZABLE WITH VINYLENE CARBONATE AND WHICH CONTAINS A CH2=C< GROUPING, AND (2) AT LEAST ONE NITROGENOUS COMPOUND SELECTED FROM THE CLASS CONSISTING OF AMMONIA, PRIMARY AMINES AND SECONDARY AMINES, SAID REACTION PRODUCT BEING A CARBAMATE.
Claim 2
Dependent Claim
73 words
A COMPOSITION COMPRISING THE PRODUCT OF REACTION OF INGREDIENTS COMPRISING (1) A POLYMER OF VINYLENE CARBONATE CONTAINING AT LEAST 10 MOLE PERCENT OF COMBINED VINYLENE CARBONATE AND UP TO 90 MOLE PERCENT OF A DIFFERENT COMPOUND WHICH IS COPOLYMERIZABLE WITH VINYLENE CARBONATE AND WHICH CONTAINS A CH2=C< GROUPING, AND (2) AT LEAST ONE NITROGENOUS COMPOUND SELECTED FROM THE CLASS CONSISTING OF AMMONIA, PRIMARY AMINES AND SECONDARY AMINES, SAID REACTION PRODUCT BEING A CARBAMATE.
References Cited (Backward Citations)
US2483194A
Cited
US2563771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |