US3459787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulphur containing polyesters
Assignee: Research Corp
•
Filing: 1965-10-11
•
Granted: 1969-08-05
•
Expires: 1985-10-11
Abstract
No abstract record available.
Inventors
- 👤 William E Weesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:29
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A THIOPOLYESTER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OBTAINED BY HEATING A GLYCOL AND A DITHIODICARBOXYLIC ACID, SAID THIOPOLYESTER BEING MADE UP OF THE FOLLOWING REPEATING UNIT
Claim 2
Dependent Claim
27 words
A THIOPOLYESTER CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OBTAINED BY HEATING A GLYCOL AND A DITHIODICARBOXYLIC ACID, SAID THIOPOLYESTER BEING MADE UP OF THE FOLLOWING REPEATING UNIT
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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |