Patent US2950987A successfully refreshed from Google Patents.
US2950987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally-sensitive recording elements
Assignee: EIDP Inc
•
Filing: 1958-10-28
•
Granted: 1960-08-30
•
Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward George Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:44
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/30; B41M5/323; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A THERMALLY-SENSETIVE IMAGE -RECOVERING ELEMENT COMPRISING A FLEXIBLE SHEET SUPPORT OF LOW HEAT CONDUCTIVITY AND A STRATUM CONTAINING IN AN AMOUNT FROM ABOUT 10 TO ABOUT 500 MILLIGRAMS PER SQUARE DECIMETER, A 5-HYDROXY-2-PYRROLONE BYH THE GENERAL FORMULA
Claim 2
Dependent Claim
37 words
A THERMALLY-SENSETIVE IMAGE -RECOVERING ELEMENT COMPRISING A FLEXIBLE SHEET SUPPORT OF LOW HEAT CONDUCTIVITY AND A STRATUM CONTAINING IN AN AMOUNT FROM ABOUT 10 TO ABOUT 500 MILLIGRAMS PER SQUARE DECIMETER, A 5-HYDROXY-2-PYRROLONE BYH THE GENERAL 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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |