US2811472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Black grid wire coating, and a method and device for producing it
Assignee: GTE Sylvania Inc
•
Filing: 1953-10-12
•
Granted: 1957-10-29
•
Expires: 1973-10-12
Abstract
No abstract record available.
Inventors
- 👤 Verne D Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:52
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/44; C23C16/54; C23C16/545; H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
THE PROCESS OF BLACKENING A WIRE WHICH COMPRISES PASSING THE WIRE THROUGH A FLAME HAVING AN INNER OXIDIZING ZONE AND AN OUTER ENVELOPE FORMING A REDUCING ZONE WITH THE WIRE JUST SKIMMING THE OXIDIZING ZONE AS IT ENTERS THE FLAME.
References Cited (Backward Citations)
DE435273C
Cited
US1862138A
Cited
US2057582A
Cited
US2051828A
Cited
US2177258A
Cited
US2328422A
Cited
US2279684A
Cited
US2344906A
Cited
US2356956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |