US3513133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction product of elemental sulfur with sulfur containing polyesters and method of preparation
Assignee: WILLIAM E WEESNER
•
Filing: 1969-03-20
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Granted: 1970-05-19
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Expires: 1989-03-20
Abstract
No abstract record available.
Inventors
- 👤 William E Weesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:49
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/91; C08G63/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2813086A
Cited
US2978434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-18 | 1973-11-17 | 1974-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-18 | 1977-11-17 | 1978-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-18 | 1981-11-17 | 1982-05-19 | $7700.00 | Window Closed / Lapsed |