US3332792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of antihalation layers
Assignee: GAF Chemicals Corp
•
Filing: 1963-09-27
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Granted: 1967-07-25
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Expires: 1983-09-27
Abstract
No abstract record available.
Inventors
- 👤 Mackey E Scudder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; C; C01; C01P; C01P2004/00; C01P2004/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR THE PREPARATION OF AN ANTIHALATION LAYER WHICH COMPRISES CONTACTING POTASSIUM PERMANGANATE WITH A STARCH ETHER IN AQUEOUS ACID SOLUTION, SAID ETHER BEING SELECTED FROM THE CLASS CONSISTING OF THOSE HAVING THE FORMULA:
Claim 2
Dependent Claim
35 words
A PROCESS FOR THE PREPARATION OF AN ANTIHALATION LAYER WHICH COMPRISES CONTACTING POTASSIUM PERMANGANATE WITH A STARCH ETHER IN AQUEOUS ACID SOLUTION, SAID ETHER BEING SELECTED FROM THE CLASS CONSISTING OF THOSE HAVING THE FORMULA:
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |