Patent US3707687A successfully refreshed from Google Patents.
Patent US2952569A successfully refreshed from Google Patents.
US2952569A
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Method and apparatus forming an ice seal in vapor deposition
Assignee: National Steel Corp
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Filing: 1958-01-28
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Granted: 1960-09-13
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Expires: 1978-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles A Baer
- 👤 James H Gardner
- 👤 Paul L Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:17
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/56; C23C14/562; Y; Y10; Y10S; Y10S277/00; Y10S277/906; Y10S277/913; Y10S277/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
METHOD FOR FORMING A VACUUM SEAL FOR CONTINUOUSLY PASSING A METALLIC SUBSTRATE SUCH AS SHEET STEEL OR IRON FROM THE ATMOSPHERE THROUGH AN OPENING INTO A VACUUM CHAMBER FORMING PART OF A VACUUM COATING DEVICE WHICH COMPRISES CONTINUOUSLY PASSING A SUBSTRATE THROUGH AN ELONGATED PASSAGE EXTENDING BETWEEN THE ATMOSPHERE AND A VACUUM CHAMBER, AND COOLING SAID PASSAGES TO A TEMPERATURE BELOW THE FREEZING POINT OF WATER TO FORM THEREIN AN ICE SEAL.
Claim 2
Dependent Claim
72 words
METHOD FOR FORMING A VACUUM SEAL FOR CONTINUOUSLY PASSING A METALLIC SUBSTRATE SUCH AS SHEET STEEL OR IRON FROM THE ATMOSPHERE THROUGH AN OPENING INTO A VACUUM CHAMBER FORMING PART OF A VACUUM COATING DEVICE WHICH COMPRISES CONTINUOUSLY PASSING A SUBSTRATE THROUGH AN ELONGATED PASSAGE EXTENDING BETWEEN THE ATMOSPHERE AND A VACUUM CHAMBER, AND COOLING SAID PASSAGES TO A TEMPERATURE BELOW THE FREEZING POINT OF WATER TO FORM THEREIN AN ICE SEAL.
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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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |