Patent US3254061A successfully refreshed from Google Patents.
US3254061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of linear poly
Assignee: Eastman Kodak Co
•
Filing: 1960-12-20
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Granted: 1966-05-31
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Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 James C Martin
- 👤 Gilkey Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:52
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G75/00; C08G75/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A METHOD FOR THE PREPARATION OF A HIGHLY POLYMERIC LINEAR POLY(THIOL ESTER) COMPRISING REACTING IN THE PRESENCE OF AN ESTE RINTERCHANGE CATALYST AT A TEMPERATURE OF AT LEAST ABOUT 150*C.; (1) A PHENYL DIESTER HAVING THE FORMULA:
Claim 2
Independent Claim
37 words
A METHOD FOR THE PREPARATION OF A HIGHLY POLYMERIC LINEAR POLY(THIOL ESTER) COMPRISING REACTING IN THE PRESENCE OF AN ESTE RINTERCHANGE CATALYST AT A TEMPERATURE OF AT LEAST ABOUT 150*C.; (1) A PHENYL DIESTER HAVING THE FORMULA:
References Cited (Backward Citations)
US2465319A
Cited
US2527374A
Cited
US2563133A
Cited
US2510567A
Cited
US2720506A
Cited
US2806877A
Cited
US3018272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |