US3057892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain polyoxyalkylene glycol esters
Assignee: Baker Petrolite LLC
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Filing: 1959-06-30
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Granted: 1962-10-09
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Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:45
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/66; C08G63/668; C09; C09K; C09K8/00; C09K8/58; C09K8/588; C09K8/60; C09K8/62; C09K8/64; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 0
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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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |