Patent US3052641A successfully refreshed from Google Patents.
US3052641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron-nitrogen polymers
Assignee: US Borax Inc
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Filing: 1959-08-03
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Granted: 1962-09-04
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Allen L Mccloskey
- 👤 William D English
- 👤 Harry Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:45
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
THE METHOD OF PRODUCING FUSABLE THERMALLY STABLE POLYMERS WHICH COMPRISES HEATING A SUBSTITUTED BORAZOLE IN A CLOSED SYSTEM AT A TEMPERATURE OF FROM ABOUT 350600* C, SAID BORAZOLE HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
32 words
THE METHOD OF PRODUCING FUSABLE THERMALLY STABLE POLYMERS WHICH COMPRISES HEATING A SUBSTITUTED BORAZOLE IN A CLOSED SYSTEM AT A TEMPERATURE OF FROM ABOUT 350600* C, SAID BORAZOLE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2892869A
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 |