US2898240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-conductive cell
Assignee: US Philips Corp
•
Filing: 1957-09-23
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Granted: 1959-08-04
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Owen Alan Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:38
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; B; B01; B01J; B01J19/00; B01J19/08; B01J19/10; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE METHOD OF DEPOSITING PHOTOCONDUCTIVE MATERIAL ONTO A SUPPORT COMPRISING THE STEPS OF IMMERSING SAID SUPPORT IN A SOLUTION CONTAINNG PHOTOCONDUCTIVE MATERIAL, ADDING A PRECIPTATING AGENT FOR THE PHOTOCONDUCTIVE MATERIAL TO THEREBY CAUSE THE PHOTOCONDUCTIVE MATERIAL TO DEPOSIT ON SAID SUPPORT AND SETTING UP ULTRASONIC VIBRATIONS IN SAID SOLUTION TO AGITATE SAID SOLUTION AT ULTRASONIC FREQUENCIES DURING THE COURSE OF SAID DEPOSITION.
Claim 2
Independent Claim
62 words
THE METHOD OF DEPOSITING PHOTOCONDUCTIVE MATERIAL ONTO A SUPPORT COMPRISING THE STEPS OF IMMERSING SAID SUPPORT IN A SOLUTION CONTAINNG PHOTOCONDUCTIVE MATERIAL, ADDING A PRECIPTATING AGENT FOR THE PHOTOCONDUCTIVE MATERIAL TO THEREBY CAUSE THE PHOTOCONDUCTIVE MATERIAL TO DEPOSIT ON SAID SUPPORT AND SETTING UP ULTRASONIC VIBRATIONS IN SAID SOLUTION TO AGITATE SAID SOLUTION AT ULTRASONIC FREQUENCIES DURING THE COURSE OF SAID DEPOSITION.
References Cited (Backward Citations)
US2657668A
Cited
US2809132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |