Patent US3311918A successfully refreshed from Google Patents.
US3311918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for exposing photosensitive material
Assignee: Bunker Ramo Corp
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Filing: 1965-01-07
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Granted: 1967-03-28
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Expires: 1985-01-07
Abstract
No abstract record available.
Inventors
- 👤 Robert A Koster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:51
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF EXPOSING A RELATIVELY SLOW SPEED PHOTOSENSITIVE MATERIAL BY MEANS OF LIGHT EMITTED FROM A SHORT PERSISTANCE PHOSPHOR, WHICH METHOD COMPRISES: EXCITING A RELATIVELY LONG PERSISTENCE PHOSPHOR IN ACCORDANCE WITH INFORMATION TO BE RECORDED ON SAID MATERIAL TO PROVIDE A FIRST LIGHT IMAGE SUBSTANTIALLY CONTINUOUSLY, CONVERTING SAID FIRST LIGHT IMAGE INTO A SIMILAR ELECTRON IMAGE, EXCITING SAID SHORT PERSISTENCE PHSOSPHOR FROM SAID ELECTRON IMAGE TO PROVIDE A SECOND LIGHT IMAGE SUBSTANTIALLY CONTINUOUSLY, AND EXPOSING SAID FILM TO SAID SECOND LIGHT IMAGE.
Claim 2
Independent Claim
83 words
A METHOD OF EXPOSING A RELATIVELY SLOW SPEED PHOTOSENSITIVE MATERIAL BY MEANS OF LIGHT EMITTED FROM A SHORT PERSISTANCE PHOSPHOR, WHICH METHOD COMPRISES: EXCITING A RELATIVELY LONG PERSISTENCE PHOSPHOR IN ACCORDANCE WITH INFORMATION TO BE RECORDED ON SAID MATERIAL TO PROVIDE A FIRST LIGHT IMAGE SUBSTANTIALLY CONTINUOUSLY, CONVERTING SAID FIRST LIGHT IMAGE INTO A SIMILAR ELECTRON IMAGE, EXCITING SAID SHORT PERSISTENCE PHSOSPHOR FROM SAID ELECTRON IMAGE TO PROVIDE A SECOND LIGHT IMAGE SUBSTANTIALLY CONTINUOUSLY, AND EXPOSING SAID FILM TO SAID SECOND LIGHT IMAGE.
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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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |