Patent US3795512A successfully refreshed from Google Patents.
US3795512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging system
Assignee: Individual
•
Filing: 1967-12-21
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Granted: 1974-03-05
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Expires: 1987-12-21
Abstract
Abstract A POSITIVE TO POSITIVE (NEGATIVE TO NEGATIVE) IMAGING SYSTEM, THE IMAGING MEMBER GENERALLY COMPRISING, IN ITS SIMPLEST FORM, PHOTOSENTIVE FRACTURABLE MATERIAL CONTAINED IN A SOFTENABLE, ELECTRICALLY INSULATING LAYER ON A SUBSTRATE, THE PROCESS STEPS GENERALLY COMPRISING IN A PREFERRED EMBODIMENT, UNIFORM CHARGING WITH A CHARGE OF A FIRST POLARITY; IMAGEWISE EXPOSURE; UNIFORM CHARGING WITH A CHARGE OF A POLARITY OPPOSITE SAID FIRST POLARITY; AND UNIFORM EXPOSURE TO FORM THE LATENT IMAGE WHICH MAY THEN BE DEVELOPED TO CAUSE IMAGEWISE MIGRATION OF FRACTURABLE MATERIAL.
Inventors
- 👤 J Knieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:59
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/10; G03G13/00; G03G13/14; G03G13/22; G03G13/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |