US2925423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent-soluble metal phthalocyanine compounds and process of making the same
Assignee: EIDP Inc
•
Filing: 1958-01-24
•
Granted: 1960-02-16
•
Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Weinmayr Viktor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/78; C09B62/84; Y; Y10; Y10S; Y10S8/00; Y10S8/938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2225441A
Cited
GB515637A
Cited
GB514857A
Cited
US2227628A
Cited
FR857415A
Cited
US2702306A
Cited
CH281990A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |