US2723919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photochemical mirroring process
Assignee: Individual
•
Filing: 1951-11-29
•
Granted: 1955-11-15
•
Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Mildred M Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:02
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/06; C03C17/10; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
THE PHOTOCHEMICAL PROCESS OF FORMING SILVER MIRRORS WHICH COMPRISES COVERING A HYALINE SURFACE WITH A SOLUTION OF AMMONIACAL SILVER NITRATE CONTAINING A REDUCING AGENT, AND THEREAFTER SUBJECTING THE SAID SOLUTION TO RADIATION CONTROLLED TO CONTAIN A MAJOR PORTION OF ITS ENERGY IN WAVE LENGTHS BETWEEN 5000A. AND 180A.
Claim 2
Dependent Claim
48 words
THE PHOTOCHEMICAL PROCESS OF FORMING SILVER MIRRORS WHICH COMPRISES COVERING A HYALINE SURFACE WITH A SOLUTION OF AMMONIACAL SILVER NITRATE CONTAINING A REDUCING AGENT, AND THEREAFTER SUBJECTING THE SAID SOLUTION TO RADIATION CONTROLLED TO CONTAIN A MAJOR PORTION OF ITS ENERGY IN WAVE LENGTHS BETWEEN 5000A. AND 180A.
References Cited (Backward Citations)
US2327723A
Cited
US2453770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |