US2544668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Werner-type chromium compounds
Assignee: EIDP Inc
•
Filing: 1946-04-27
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Granted: 1951-03-13
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Expires: 1966-04-27
Abstract
No abstract record available.
Inventors
- 👤 Max T Goebel
- 👤 Ralph K Iler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
C; C09; C09J; C09J5/00; C09J5/02; C03; C03C; C03C17/00; C03C17/28; C04; C04B; C04B12/00; C07; C07F; C07F11/00; C07F11/005; C09J2400/00; C09J2400/10; C09J2400/14; C09J2400/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A COMPLEX COMPOUND OF THE WERNER TYPE CONSISTING OF A MONOCARBOXYLIC FUNCTIONAL ACIDO GROUP MADE UP OF CARBOXYL RADICAL JOINEDD THROUGH A CARBON CHAIN TO AN AMINE RADICAL, THE ACIDO GROUP BEING COORDINATED, THROUGH THE CARBOXYL RADICAL, WITH A NUCLEAR TRIVALENT CHROMIUM ATOM, THE COMPLEX ALSO CONTAINING ADDITIONAL COORDINATED NUCLEAR TRIVALENT CHROMIUM, THE VALENCE AND COORDINATION POSITIONS OF ALL THE NUCLEAR CHROMIUM ATOMS, OTHER THAN THOSE POSITIONS OCCUPIED BY COORDINATED FUNCTIONAL ACIDO GROUPS, BEING OCCUPIED BY GROUPS SELECTED FROM THE CLASS CONSISTING OF AQUO GROUPS, HYDROXYL, AND MONOVALENT NEGATIVE GROUPS WHICH ARE ANIONS OF MONOBASIC ACIDS, AND THE TOTAL NUMBER OF NUCLEAR TRIVALENT CHROMIUM ATOMS WITHIN THE COMPLEX BEING FROM ONE TO TEN TIMES THE NUMBER OF COORDINATED FUNCTIONAL ACIDO GROUPS.
Claim 2
Dependent Claim
121 words
A COMPLEX COMPOUND OF THE WERNER TYPE CONSISTING OF A MONOCARBOXYLIC FUNCTIONAL ACIDO GROUP MADE UP OF CARBOXYL RADICAL JOINEDD THROUGH A CARBON CHAIN TO AN AMINE RADICAL, THE ACIDO GROUP BEING COORDINATED, THROUGH THE CARBOXYL RADICAL, WITH A NUCLEAR TRIVALENT CHROMIUM ATOM, THE COMPLEX ALSO CONTAINING ADDITIONAL COORDINATED NUCLEAR TRIVALENT CHROMIUM, THE VALENCE AND COORDINATION POSITIONS OF ALL THE NUCLEAR CHROMIUM ATOMS, OTHER THAN THOSE POSITIONS OCCUPIED BY COORDINATED FUNCTIONAL ACIDO GROUPS, BEING OCCUPIED BY GROUPS SELECTED FROM THE CLASS CONSISTING OF AQUO GROUPS, HYDROXYL, AND MONOVALENT NEGATIVE GROUPS WHICH ARE ANIONS OF MONOBASIC ACIDS, AND THE TOTAL NUMBER OF NUCLEAR TRIVALENT CHROMIUM ATOMS WITHIN THE COMPLEX BEING FROM ONE TO TEN TIMES THE NUMBER OF COORDINATED FUNCTIONAL ACIDO GROUPS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |