US2498533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous compositions
Assignee: California Research LLC
•
Filing: 1946-03-19
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Granted: 1950-02-21
•
Expires: 1966-03-19
Abstract
No abstract record available.
Inventors
- 👤 Ludwig H Dimpfl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:31
CPC Classifications
C; C08; C08G; C08G69/00; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553; C08G63/68; C08G63/685; C08G63/6854; C08G63/6858
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A RESINOUS COMPOSITION COMPRISING THE CONDENSATION PRODUCT OF (I) A LINEAR CONDENSATION POLYMER FORMED BY THE REACTION OF (A) A CYCLOHEXADIENE DICARBOXYLIC ACID HAVING CONJUGATED ETHYLENIC UNSATURATION AND (B) A MEMBER OF THE GROUP CONSISTING OF THE DIHYDRIC ALCOHOLS, THE DIAMINES AND THE AMINO-ALCOHOLS AND (II) A LINEAR CONDENSATION POLYMER FORMED BY THE REACTION OF (C) AN ALPHA, BETA, ETHYLENICALLY UNSATURATED ALIPHATIC DICARBOXYLIC ACID AND (D) A MEMBER OF THE GROUP CONSISTING OF THE DIHYDRIC ALCOHOLS, THE DIAMINES AND THE AMINO-ALCOHOLS.
Claim 2
Dependent Claim
81 words
A RESINOUS COMPOSITION COMPRISING THE CONDENSATION PRODUCT OF (I) A LINEAR CONDENSATION POLYMER FORMED BY THE REACTION OF (A) A CYCLOHEXADIENE DICARBOXYLIC ACID HAVING CONJUGATED ETHYLENIC UNSATURATION AND (B) A MEMBER OF THE GROUP CONSISTING OF THE DIHYDRIC ALCOHOLS, THE DIAMINES AND THE AMINO-ALCOHOLS AND (II) A LINEAR CONDENSATION POLYMER FORMED BY THE REACTION OF (C) AN ALPHA, BETA, ETHYLENICALLY UNSATURATED ALIPHATIC DICARBOXYLIC ACID AND (D) A MEMBER OF THE GROUP CONSISTING OF THE DIHYDRIC ALCOHOLS, THE DIAMINES AND THE AMINO-ALCOHOLS.
References Cited (Backward Citations)
US2323706A
Cited
US2403791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |