Patent US2702250A successfully refreshed from Google Patents.
US2702250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition for electronic tubes
Assignee: Ap Parts Corp
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Filing: 1951-02-16
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Granted: 1955-02-15
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Expires: 1971-02-16
Abstract
No abstract record available.
Inventors
- 👤 Miller John Clifford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:34
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/88; H01J2229/00; H01J2229/88; H01J2229/882
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A COMPOSITION FOR ESTABLISHING A CURRENT CONDUCTING FILM UPON A SURFACE INCLUDING A DISPSESION EMBODYING COLLODIAL GRAPHITE OF FINE PARTICLE SIZE, AND OXIDIZABLE BINDER VOLATILIZABLE BELOW 315* C. COMPRISING AN ETHYL CELLULOSE, AND A VOLATILIZABLE LIQUID BOILING BELOW 100* C. COMPRISING AN ALCOHOL OF 1 TO 3 CARBON ATOMS APER MOLECULE AND DICHLOROMETHANE.
Claim 2
Dependent Claim
53 words
A COMPOSITION FOR ESTABLISHING A CURRENT CONDUCTING FILM UPON A SURFACE INCLUDING A DISPSESION EMBODYING COLLODIAL GRAPHITE OF FINE PARTICLE SIZE, AND OXIDIZABLE BINDER VOLATILIZABLE BELOW 315* C. COMPRISING AN ETHYL CELLULOSE, AND A VOLATILIZABLE LIQUID BOILING BELOW 100* C. COMPRISING AN ALCOHOL OF 1 TO 3 CARBON ATOMS APER MOLECULE AND DICHLOROMETHANE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |