US3300399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purifying metal polyphthalocyanines
Assignee: Monsanto Co
•
Filing: 1963-01-25
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Granted: 1967-01-24
•
Expires: 1983-01-25
Abstract
No abstract record available.
Inventors
- 👤 Bernard S Wildi
- 👤 Edward M Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:00
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD OF REMOVING EXCESS METAL WHICH DOES NOT REACT READILY WITH WATER FROM A METAL POLYPHTHALOCYANINE COMPRISING ELECTROLYZING SAID METAL POLYPHTHALOCYANINE AS A POSITIVE ELECTRODE IN AN ELECTROLYSIS SYSTEM USING AN APPLIED DIRECT CURRENT VOLTAGE SUFFICIENT TO CAUSE THE METAL TO PLATE OUT ON THE NEGATIVE ELECTRODE.
Claim 2
Independent Claim
48 words
A METHOD OF REMOVING EXCESS METAL WHICH DOES NOT REACT READILY WITH WATER FROM A METAL POLYPHTHALOCYANINE COMPRISING ELECTROLYZING SAID METAL POLYPHTHALOCYANINE AS A POSITIVE ELECTRODE IN AN ELECTROLYSIS SYSTEM USING AN APPLIED DIRECT CURRENT VOLTAGE SUFFICIENT TO CAUSE THE METAL TO PLATE OUT ON THE NEGATIVE ELECTRODE.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |