US2601161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medium for use in making camera copy and method of preparing the same
Assignee: LOUIS S SANDERS
•
Filing: 1948-08-19
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Granted: 1952-06-17
•
Expires: 1968-08-19
Abstract
No abstract record available.
Inventors
- 👤 Maurice D Mcintosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
G; G03; G03F; G03F5/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24835
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A METHOD OF PREPARING A MEDIUM FOR USE IN MAKING CAMERA COPY, THE STEPS WHICH CONSISTS IN APPLYING TO A NON-MOISTURE-PROOF SURFACE, A SOLUTION CONTAINING AT LEAST TWO INGREDIENTS, ONE OF WHICH REMAINS SUPERFICIALLY ON SAID SURFACE AS A CHEMICALLY-DEVELOPABLE PATTERN COMPRISING UNIFORMLY SPACED DOTS, AND THE OTHER OF WHICH IMPREGNATES SAID SURFACE AND SPREADS UNIFORMLY IN ALL DIRECTIONS TO FORM A SECOND PATTERN COMPRISING SPACED DOTS LARGER THAN SAID FIRST-NAMED DOTS AND IN REGISTRATION WITH SAID FIRST-NAMED DOTS, THE INGREDIENT FORMING THE FIRST-NAMED DOTS BEING MERCUROUS CHLORIDE, AND THE INGREDIENTS FORMING THE LARGER DOTS BEING COBALTOUS CHLORIDE.
Claim 2
Dependent Claim
99 words
IN A METHOD OF PREPARING A MEDIUM FOR USE IN MAKING CAMERA COPY, THE STEPS WHICH CONSISTS IN APPLYING TO A NON-MOISTURE-PROOF SURFACE, A SOLUTION CONTAINING AT LEAST TWO INGREDIENTS, ONE OF WHICH REMAINS SUPERFICIALLY ON SAID SURFACE AS A CHEMICALLY-DEVELOPABLE PATTERN COMPRISING UNIFORMLY SPACED DOTS, AND THE OTHER OF WHICH IMPREGNATES SAID SURFACE AND SPREADS UNIFORMLY IN ALL DIRECTIONS TO FORM A SECOND PATTERN COMPRISING SPACED DOTS LARGER THAN SAID FIRST-NAMED DOTS AND IN REGISTRATION WITH SAID FIRST-NAMED DOTS, THE INGREDIENT FORMING THE FIRST-NAMED DOTS BEING MERCUROUS CHLORIDE, AND THE INGREDIENTS FORMING THE LARGER DOTS BEING COBALTOUS CHLORIDE.
References Cited (Backward Citations)
USRE20503E
Cited
US2355884A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |