US3052652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxylated polyvinyl alcohol
Assignee: Hexion Inc
•
Filing: 1958-02-26
•
Granted: 1962-09-04
•
Expires: 1978-02-26
Abstract
No abstract record available.
Inventors
- 👤 Benjamin D Halpern
- 👤 Bruno O Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:16
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/08; C08F; C08F8/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2133125A
Cited
GB364323A
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DE575141C
Cited
GB361691A
Cited
GB368530A
Cited
US1998544A
Cited
US2227997A
Cited
US2277083A
Cited
US2844570A
Cited
US2941988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |