US3118939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium hexaborates
Assignee: Sprague Electric Co
•
Filing: 1960-06-29
•
Granted: 1964-01-21
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Expires: 1980-06-29
Abstract
No abstract record available.
Inventors
- 👤 Finkelstein Manuel
- 👤 Sidney D Ross
- 👤 Raymond C Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:48
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/89; C07F; C07F5/00; C07F5/02; C07F5/04; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2873282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |