US2993065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment and method of preparing same
Assignee: Interchemical Corp
•
Filing: 1956-10-24
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Granted: 1961-07-18
•
Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Charles A Kumins
- 👤 Paul A Scardaville
- 👤 Rudolf G Frieser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
C; C09; C09B; C09B55/00; C09B55/005; C09B55/007
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
THE NICKEL CHELATE COMPOUND CORRESPONDING TO THE FORMULA:
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) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |