US3268333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High gain dry photographic system
Assignee: International Business Machines Corp
•
Filing: 1963-12-30
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Granted: 1966-08-23
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles E Allman
- 👤 Alfred H Sporer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675; G03C1/72; G03C1/73; G03C1/733
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS COMPRISING THE SEQUENTIAL STEPS OF: (1) SELECTIVELY EXPOSING TO LIGHT A PHOTOGRAPHIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF: (A) A MIXTURE OF (1) AT LEAST ONE HYDROGEN HALIDE PRECURSOR WHICH DECOMPOSES ON EXPOSURE TO LIGHT TO CAUSE THE FORMATION OF HYDROGEN HALIDE, AND (2) A LINEAR POLYKETONE HAVING THE REPEATING UNIT
Claim 2
Dependent Claim
54 words
A PROCESS COMPRISING THE SEQUENTIAL STEPS OF: (1) SELECTIVELY EXPOSING TO LIGHT A PHOTOGRAPHIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF: (A) A MIXTURE OF (1) AT LEAST ONE HYDROGEN HALIDE PRECURSOR WHICH DECOMPOSES ON EXPOSURE TO LIGHT TO CAUSE THE FORMATION OF HYDROGEN HALIDE, AND (2) A LINEAR POLYKETONE HAVING THE REPEATING UNIT
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |