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US2909545A
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Chromium coordination complexes
Assignee: 3M Co
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Filing: 1955-03-11
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Granted: 1959-10-20
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Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 William S Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:27
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/12; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/38; C07; C07C; C07C53/00; C07C53/15; C07C53/19; C07C53/21; C07F; C07F11/00; C07F11/005; C14; C14C; C14C9/00; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/236
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
CHROMINUM COORDINATION COMPLEXES SELECTED FROM THE GROUP CONSISTING OF (A) THE COORDINATION COMPLEX FORMED BY THE REACTION OF A TRIVALENT CHROMIUM COMPOUND WHICH IS AT LEAST ONE THIRD BASIC WITH A PERCHLOROFLUOROMONOCARBOXYLIC ACID CORRESPONDING ITO THE FORMULA
Claim 2
Dependent Claim
37 words
CHROMINUM COORDINATION COMPLEXES SELECTED FROM THE GROUP CONSISTING OF (A) THE COORDINATION COMPLEX FORMED BY THE REACTION OF A TRIVALENT CHROMIUM COMPOUND WHICH IS AT LEAST ONE THIRD BASIC WITH A PERCHLOROFLUOROMONOCARBOXYLIC ACID CORRESPONDING ITO THE FORMULA
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |