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US2662835A
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Chromium coordination complexes of saturated perfluoro-monocarboxylic acids and articles coated therewith
Assignee: 3M Co
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Filing: 1951-04-06
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Granted: 1953-12-15
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Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/224; D06M13/236; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; C03C17/28; C07; C07C; C07C53/00; C07C53/15; C07C53/19; C07C53/21; C07C61/00; C07C61/15; C07F; C07F11/00; C07F11/005; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/219; C03C2218/00; C03C2218/10; C03C2218/11; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
70 words
CHROMIUM COORDINATION COMPLEXES OF THE CLASS CONSISTING OF: (A) COMPLEXES FORMED BY REACTING CHROMYL CHLORIDE WITH SATURATED PERFLUOROMONOCARBOXYLIC ACIDS HAVING FROM 4 TO 10 CARBON ATOMS IN THE MOLECULE, IN AN INERT ANHYDROUS SOLVENT VEHICLE AND IN THE PRESENCE OF A REDUCING AGENT, AND (B) THE HYDROLYZED AND AMMONIATED DERIVATIVES THEREOF; THESE CHROMIUM COMPLEXES BEING SOLIDS WHICH ARE SLIGHTLY SOLUBLE IN WATER AND ARE HIGHLY SOLUBLE IN ACETONE AND ALCOHOLS.
Claim 2
Dependent Claim
70 words
CHROMIUM COORDINATION COMPLEXES OF THE CLASS CONSISTING OF: (A) COMPLEXES FORMED BY REACTING CHROMYL CHLORIDE WITH SATURATED PERFLUOROMONOCARBOXYLIC ACIDS HAVING FROM 4 TO 10 CARBON ATOMS IN THE MOLECULE, IN AN INERT ANHYDROUS SOLVENT VEHICLE AND IN THE PRESENCE OF A REDUCING AGENT, AND (B) THE HYDROLYZED AND AMMONIATED DERIVATIVES THEREOF; THESE CHROMIUM COMPLEXES BEING SOLIDS WHICH ARE SLIGHTLY SOLUBLE IN WATER AND ARE HIGHLY SOLUBLE IN ACETONE AND ALCOHOLS.
Claim 3
Dependent Claim
25 words
AN ARTICLE HAVING A HYDROPHILIC TYPE SURFACE UPON WHICH IS TIGHTLY BONDED IN THIN WATER-INSOLUBLE COATING FILM FORMED FROM A COMPLEX DEFINED IN CLAIM 1.
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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |