Patent US3487045A successfully refreshed from Google Patents.
US3487045A
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US
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Aromatic polymers which are prepared by reacting an ortho phenolic novolak with boron compounds
Assignee: Hooker Chemical Corp
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Filing: 1964-11-30
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Granted: 1969-12-30
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Alvin F Shepard
- 👤 Bobby F Dannels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:48
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/54; C08G18/542; C08G18/546; C08L; C08L61/00; C08L61/04; C08L61/06; C08L61/14
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |