Patent US2291958A successfully refreshed from Google Patents.
US2291958A
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Process of preparing phosphorus and boron containing compounds and products obtained thereby
Assignee: Texaco Inc
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Filing: 1937-07-07
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Granted: 1942-08-04
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Expires: 1957-07-07
Abstract
No abstract record available.
Inventors
- 👤 Allen D Garrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:02
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/08; C01B35/10; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/19; Y; Y10; Y10S; Y10S516/00; Y10S516/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-08-03 | 1946-02-02 | 1946-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-03 | 1950-02-02 | 1950-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-03 | 1954-02-02 | 1954-08-04 | $7700.00 | Window Closed / Lapsed |