US2877145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating
Assignee: National Research Corp
•
Filing: 1956-02-13
•
Granted: 1959-03-10
•
Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 Charles A Baer
- 👤 Philip J Clough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:27
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/06; C23C14/14; C23C14/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN THE PROCESS OF COATING A SUBSTRATE WITH ZINC BY VACUUM DEPOSITION TECHNIQUES, THE IMPROVEMENT WHICH COMPRISES MAINTAINING A SUPPLY OF MOLTEN ZINC AT A TEMPERATURE ABOVE ABOUT 700*C. IN AN EVACUTED COATING CHAMBER TO PROVIDE HIGH-ENERGY ZINC VAPORS THEREFROM WHILE MOVING SIAD SUBSTRATE PAST THE SUPPLY OF MOLTEN ZINC AT A SPEED TO GIVE A ZINC COATING HAVING A RESISTANCE BETWEEN ABOUT 0.5 AND 5 OHMS PER SQUARE.
Claim 2
Dependent Claim
69 words
IN THE PROCESS OF COATING A SUBSTRATE WITH ZINC BY VACUUM DEPOSITION TECHNIQUES, THE IMPROVEMENT WHICH COMPRISES MAINTAINING A SUPPLY OF MOLTEN ZINC AT A TEMPERATURE ABOVE ABOUT 700*C. IN AN EVACUTED COATING CHAMBER TO PROVIDE HIGH-ENERGY ZINC VAPORS THEREFROM WHILE MOVING SIAD SUBSTRATE PAST THE SUPPLY OF MOLTEN ZINC AT A SPEED TO GIVE A ZINC COATING HAVING A RESISTANCE BETWEEN ABOUT 0.5 AND 5 OHMS PER SQUARE.
References Cited (Backward Citations)
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US2615955A
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US2702760A
Cited
US2740732A
Cited
US2726179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |