US2700610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photothermographic composition
Assignee: Individual
•
Filing: 1952-11-04
•
Granted: 1955-01-25
•
Expires: 1972-11-04
Abstract
No abstract record available.
Inventors
- 👤 Suchow Lawrence
- 👤 Seymour L Hersh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A MEHTOD OF MAKING A PHOTOTHERMOGRAPHIC COMPOSITION COMPRISING COPRECIPITATING SILVER OXALATE AND MERCURY OXALATES FROM A MIXTURE OF A SOLUTION OF SILVER NITRATE AND MERCURY NITRATES IN THE PRESENCE OF NITRIC ACID BY ADDING TO SAID MIXTURE A SOLUTION OF POTASSIUM OXALATE.
Claim 2
Dependent Claim
42 words
A MEHTOD OF MAKING A PHOTOTHERMOGRAPHIC COMPOSITION COMPRISING COPRECIPITATING SILVER OXALATE AND MERCURY OXALATES FROM A MIXTURE OF A SOLUTION OF SILVER NITRATE AND MERCURY NITRATES IN THE PRESENCE OF NITRIC ACID BY ADDING TO SAID MIXTURE A SOLUTION OF POTASSIUM OXALATE.
References Cited (Backward Citations)
US1976302A
Cited
GB616318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-24 | 1958-07-26 | 1959-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-24 | 1962-07-26 | 1963-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-24 | 1966-07-26 | 1967-01-25 | $7700.00 | Window Closed / Lapsed |