Patent US3157606A successfully refreshed from Google Patents.
US3157606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fatty oil modified polycarbonate resins and processes for producing same
Assignee: Honeywell International Inc
•
Filing: 1961-05-12
•
Granted: 1964-11-17
•
Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 Rudolph D Deanin
- 👤 Ann V Pinter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:11
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/64; C08G64/00; C08G64/04; C08G64/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A POLYCARBONATE RESIN PRODUCED BY REACTING (1) AN ESTER FORMING DERIVATIVE OF CARBONIC ACID SELECTED FROM THE GROUP CONSISTING OF PHOSGENE AND A CARBONIC ACID DIESTER, AND (2) THE REACTION PRODUCT OBTAINED BY HEATING A MIXTURE OF FROM ABOUT 10 TO ABOUT 90 WEIGHT PERCENT OF A FATTY OIL AND FROM ABOUT 90 TO ABOUT 10 WEIGHT PERCENT OF A BISPHENOL SELECTED FROM THE GROUP CONSISTING OF BISPHENOLS HAVING THE STRUCTURE
Claim 2
Dependent Claim
71 words
A POLYCARBONATE RESIN PRODUCED BY REACTING (1) AN ESTER FORMING DERIVATIVE OF CARBONIC ACID SELECTED FROM THE GROUP CONSISTING OF PHOSGENE AND A CARBONIC ACID DIESTER, AND (2) THE REACTION PRODUCT OBTAINED BY HEATING A MIXTURE OF FROM ABOUT 10 TO ABOUT 90 WEIGHT PERCENT OF A FATTY OIL AND FROM ABOUT 90 TO ABOUT 10 WEIGHT PERCENT OF A BISPHENOL SELECTED FROM THE GROUP CONSISTING OF BISPHENOLS HAVING THE STRUCTURE
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |