US2793609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for the deposition of materials by evaporation in a vacuum
Assignee: BRITISH DIELECTRIC RES Ltd
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Filing: 1954-01-20
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Granted: 1957-05-28
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Expires: 1974-01-20
Abstract
No abstract record available.
Inventors
- 👤 Shen Tzu En
- 👤 Huggett John Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:25
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
APPARATUS FOR THE DEPOSITION OF VAPORISED MATERIAL UPON A SURFACE IN A VACUUM, COMPRISING A CONTAINER FOR THE MATERIAL TO BE VAPORISED, AN OUTLET PASSAGE FOR DIRECTING THE VAPOR FROM THE CONTAINER TO THE SURFACE TO BE COATED, THE PASSAGE HAVING AN ELONGATED CROSS-SECTION, AND A CYLINDRICAL ROD AT THE ENTRANCE TO THE PASSAGE HAVING A DIAMETER AT LEAST EQUAL TO THE SMALLEST TRANSVERSE DIMENSION OF THE PASSAGE AND EXTENDING COMPLETELY ACROSS THE LONGEST TRANSVERSE DIMENSION OF THE PASSAGE, THE ROD COMPLETELY INTERRUPTING ALL STRAIGHT LINE PATHS THROUGH THE PASSAGE FROM THE MATERIAL IN THE CONTAINER AND PROVIDING PATHS FOR THE FLOW OF VAPOR BETWEEN THE ROD AND THE ENTRANCE TO THE PASSAGE.
Claim 2
Dependent Claim
113 words
APPARATUS FOR THE DEPOSITION OF VAPORISED MATERIAL UPON A SURFACE IN A VACUUM, COMPRISING A CONTAINER FOR THE MATERIAL TO BE VAPORISED, AN OUTLET PASSAGE FOR DIRECTING THE VAPOR FROM THE CONTAINER TO THE SURFACE TO BE COATED, THE PASSAGE HAVING AN ELONGATED CROSS-SECTION, AND A CYLINDRICAL ROD AT THE ENTRANCE TO THE PASSAGE HAVING A DIAMETER AT LEAST EQUAL TO THE SMALLEST TRANSVERSE DIMENSION OF THE PASSAGE AND EXTENDING COMPLETELY ACROSS THE LONGEST TRANSVERSE DIMENSION OF THE PASSAGE, THE ROD COMPLETELY INTERRUPTING ALL STRAIGHT LINE PATHS THROUGH THE PASSAGE FROM THE MATERIAL IN THE CONTAINER AND PROVIDING PATHS FOR THE FLOW OF VAPOR BETWEEN THE ROD AND THE ENTRANCE TO THE PASSAGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |