US3068202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive polyvinyl acetals
Assignee: EIDP Inc
•
Filing: 1959-04-20
•
Granted: 1962-12-11
•
Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Burg Marion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:43
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/038; C; C08; C08F; C08F8/00; C08F8/28; C08F8/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A POLYVINYL ACETALS CONTAINING A PLURALITY OF NITRALINEAR -CH2CHOH- GROUPS AND A PLURALITY OF GROUPS OF THE FORMULA:
Claim 2
Dependent Claim
18 words
A POLYVINYL ACETALS CONTAINING A PLURALITY OF NITRALINEAR -CH2CHOH- GROUPS AND A PLURALITY OF GROUPS OF THE FORMULA:
References Cited (Backward Citations)
CA522683A
Cited
US2831768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |