US2677611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for lithographic plate coatings
Assignee: Gregory and Falk
•
Filing: 1950-11-10
•
Granted: 1954-05-04
•
Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 Vernon L Gregory
- 👤 Leonard R Macdonnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:37
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; Y; Y10; Y10S; Y10S430/00; Y10S430/15
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
AN IMAGE FORMING COATING COMPOSITION FOR PHOTOLITHOGRAPHIC PLATES COMPRISING A WATER SOLUBLE CASEINATE, A LIGHT SENSITIVE BICHROMATE, AND A NATURAL SATURATED FAT WHICH WILL FORM A FATTY EMULSION IN THE PRESENCE OF WATER.
References Cited (Backward Citations)
US134470A
Cited
US209036A
Cited
US556380A
Cited
US905306A
Cited
US2312499A
Cited
US2311888A
Cited
GB517686A
Cited
US2598189A
Cited
US2624673A
Cited
US2574258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |