US2882377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistor metal coatings on refractory materials
Assignee: PPG Industries Inc
•
Filing: 1951-10-24
•
Granted: 1959-04-14
•
Expires: 1971-10-24
Abstract
No abstract record available.
Inventors
- 👤 Dale W Rinehart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:17
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3607; C03C17/3649; C03C17/3655; C03C17/3668; C03C17/3673
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1388373A
Cited
US2118795A
Cited
US1988964A
Cited
US2047351A
Cited
US2021179A
Cited
US2229585A
Cited
US2107784A
Cited
US2235680A
Cited
US2281843A
Cited
US2369350A
Cited
US2363781A
Cited
US2335376A
Cited
US2429420A
Cited
US2388242A
Cited
US2402122A
Cited
US2482178A
Cited
US2413604A
Cited
US2502855A
Cited
US2497666A
Cited
US2586752A
Cited
US2614944A
Cited
US2648754A
Cited
US2524939A
Cited
US2557983A
Cited
US2590557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |