US3536665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyesters of 4,4' dichlorocarbonyldiphenylsulfone and aromatic dihydroxy compounds and their method of preparation
Assignee: Honeywell International Inc
•
Filing: 1967-05-25
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Granted: 1970-10-27
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Expires: 1987-05-25
Abstract
No abstract record available.
Inventors
- 👤 Edward W Pietrusza
- 👤 Jack R Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:00
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3216970A
Cited
US3160602A
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FR1317030A
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US3251805A
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US3223752A
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US3110547A
Cited
US3297633A
Cited
US3271365A
Cited
US3398121A
Cited
US3374202A
Cited
US3438938A
Cited
US3350354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |