US2829074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of evaporated layers
Assignee: EMI Ltd
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Filing: 1955-07-19
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Granted: 1958-04-01
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Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Lubszynski Hans Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:04
CPC Classifications
H; H01; H01B; H01B1/00; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; H01J; H01J9/00; H01J9/20; H01J9/233; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF DEPOSITING A SPONGY COATING OF PHOTOCONDUCTIVE MATERIAL ON A SURFACE IN THE INTERIOR OF AN ENVELOPE WHICH COMPRISES INSERTING THE PHOTO-CONDUCTIVE MATERIAL IN THE ENVELOPE, EVACUATING THE ENVELOPE, INTRODUCING XENON INTO THE ENVELOPE AT A PRESSURE OF 0.3 TO 0.7 MM. OF MERCURY AND HEATING THE PHOTO-CONDUCTIVE MATERIAL IN THE PRESENCE OF XENON TO EVAPORATE IT TO CAUSE DEPOSITION OF A SPONGY COATING OF PHOTO-CONDUCTIVE MATERIAL ON SAID SURFACE.
Claim 2
Independent Claim
72 words
THE METHOD OF DEPOSITING A SPONGY COATING OF PHOTOCONDUCTIVE MATERIAL ON A SURFACE IN THE INTERIOR OF AN ENVELOPE WHICH COMPRISES INSERTING THE PHOTO-CONDUCTIVE MATERIAL IN THE ENVELOPE, EVACUATING THE ENVELOPE, INTRODUCING XENON INTO THE ENVELOPE AT A PRESSURE OF 0.3 TO 0.7 MM. OF MERCURY AND HEATING THE PHOTO-CONDUCTIVE MATERIAL IN THE PRESENCE OF XENON TO EVAPORATE IT TO CAUSE DEPOSITION OF A SPONGY COATING OF PHOTO-CONDUCTIVE MATERIAL ON SAID SURFACE.
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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |