Patent US3287141A successfully refreshed from Google Patents.
US3287141A
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Werner chromium complexes and methods for their preparation
Assignee: EIDP Inc
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Filing: 1965-08-05
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Granted: 1966-11-22
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Expires: 1985-08-05
Abstract
No abstract record available.
Inventors
- 👤 Adam A Bartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:20
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/12; C; C07; C07C; C07C51/00; C07C51/41; C07C51/418; C07F; C07F11/00; C07F11/005; C09; C09K; C09K3/00; C09K3/18; D06; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/188; D06M13/224; D06M13/236
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A COMPOSITION OF A WERNER COMPLEX STABLE AGAINST GEL FORMATION HAVING A TOTAL WATER CONTENT OF FROM 8 TO 50% BY WEIGHT WATER, THE REMAINDER CONSISTING ESSENTIALLY OF (A) A WERNER COMPLEX OF CHROMIUM AND A CARBOXYLIC ACID CONTAINING SUBSTITUTED POLAR GROUPS HAVING A BASICITY OF 33 1/3% A RATIO OF CHROMIUM ATOMS TO ACID GROUPS FROM 1:1 TO 10:1, AND SAID COMPLEX BEING FURTHER CHARACTERIZED BY HAVING A RATIO OF COORDINATED WATER TO CHROMIUM ATOMS OF FROM AT LEAST 2:1 UP TO 4:1; AND (B) A MONOHYDRIC ALIPHATIC ALCOHOL CONTAINING 1 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
96 words
A COMPOSITION OF A WERNER COMPLEX STABLE AGAINST GEL FORMATION HAVING A TOTAL WATER CONTENT OF FROM 8 TO 50% BY WEIGHT WATER, THE REMAINDER CONSISTING ESSENTIALLY OF (A) A WERNER COMPLEX OF CHROMIUM AND A CARBOXYLIC ACID CONTAINING SUBSTITUTED POLAR GROUPS HAVING A BASICITY OF 33 1/3% A RATIO OF CHROMIUM ATOMS TO ACID GROUPS FROM 1:1 TO 10:1, AND SAID COMPLEX BEING FURTHER CHARACTERIZED BY HAVING A RATIO OF COORDINATED WATER TO CHROMIUM ATOMS OF FROM AT LEAST 2:1 UP TO 4:1; AND (B) A MONOHYDRIC ALIPHATIC ALCOHOL CONTAINING 1 TO 4 CARBON ATOMS.
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) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |