US3721723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storable photosensitized polyester molding and coating compositions
Assignee: Huels AG
•
Filing: 1970-09-10
•
Granted: 1973-03-20
•
Expires: 1990-09-10
Abstract
Abstract THE STORAGE STABILITY IN THE DARK OF POLYESTER PREPOLYMER COMPOSITIONS CURABLE BY ULTRAVIOLET RADIATION BY THE PRESENCE THEREIN OF A BENZOIN PHOTOSENSITIZER IS IMPROVED BY IMCORPORATING AN ORGANOPHOSPHITE THEREIN.
Inventors
- 👤 K Heidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08F; C08F283/00; C08F283/01; C08K5/49; C08K5/51; C08K5/52; C08K5/524; C08K5/526; Y; Y10; Y10S; Y10S522/00; Y10S522/901
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |