Patent US3485591A successfully refreshed from Google Patents.
US3485591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of pigmentary silicon carbide
Assignee: British Titan Products Co Ltd
•
Filing: 1966-02-07
•
Granted: 1969-12-23
•
Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur Wallace Evans
- 👤 Reginald George Wynne
- 👤 Chester Waldemar Marynowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:48
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/32; C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/97; H01J37/02; H01J37/16; H01J37/32009; H01J37/32082; H01J37/321; H05; H05H; H05H1/00; H05H1/24; H05H1/26; H05H1/32; H05H1/42; H01J2237/00; H01J2237/32; H01J2237/33; H01J2237/338
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2333948A
Cited
US2670275A
Cited
US3049488A
Cited
US3306705A
Cited
US3275408A
Cited
US3340020A
Cited
US3291715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |