US3433756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of high molecular weight esters of a carboxylic acid
Assignee: Huels AG
•
Filing: 1965-10-29
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Granted: 1969-03-18
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Expires: 1985-10-29
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Seeliger
- 👤 Rudolf Nehring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
C; C08; C08G; C08G64/00; C08G64/02; C08G64/0208; C08G64/20; C08G64/22; C08G64/226; C08G64/24; C08G64/26; C08G64/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3083182A
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US3062780A
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US3143525A
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US3133044A
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US3177179A
Cited
US3157606A
Cited
US3255230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-17 | 1972-09-16 | 1973-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-17 | 1976-09-16 | 1977-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-17 | 1980-09-16 | 1981-03-18 | $7700.00 | Window Closed / Lapsed |