Patent US4693243A successfully refreshed from Google Patents.
Patent US2564677A successfully refreshed from Google Patents.
US2564677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conducting coating on glass and other ceramic bodies
Assignee: Corning Glass Works
•
Filing: 1947-09-15
•
Granted: 1951-08-21
•
Expires: 1967-09-15
Abstract
No abstract record available.
Inventors
- 👤 James K Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:32
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/84; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/253; C03C17/34; C03C17/3411; C03C17/3417; H01; H01C; H01C7/00; H01C7/006; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/229; C03C2217/23; C03C2217/24; C03C2217/244; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112; H05B2203/00; H05B2203/017; Y; Y10; Y10S; Y10S425/00; Y10S425/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AN ELECTRIC HEATING DEVICE WHICH COMPRISES A VITREOUS CERAMIC BODY HAVING ON A SURFACE THEREOF AN ELECTRICALLY CONDUCTING IRIDIZED METAL OXIDE FILM INTEGRALLY UNITED WITH SUCH SURFACE AND HAVING AN ELECTRICAL RESISTANCE OF LESS THAN 1000 OHMS PER SQUARE AND SUPERPOSED ON SAID FILM AND IN-
Claim 2
Dependent Claim
46 words
AN ELECTRIC HEATING DEVICE WHICH COMPRISES A VITREOUS CERAMIC BODY HAVING ON A SURFACE THEREOF AN ELECTRICALLY CONDUCTING IRIDIZED METAL OXIDE FILM INTEGRALLY UNITED WITH SUCH SURFACE AND HAVING AN ELECTRICAL RESISTANCE OF LESS THAN 1000 OHMS PER SQUARE AND SUPERPOSED ON SAID FILM AND IN-
References Cited (Backward Citations)
AU101011B
Cited
US1954832A
Cited
US2118795A
Cited
US2026086A
Cited
US2194189A
Cited
US2244777A
Cited
US2429420A
Cited
GB577748A
Cited
US2467144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |