US3573292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel oxygen complexes and process for the production thereof
Assignee: Studiengesellschaft Kohle gGmbH
•
Filing: 1967-12-15
•
Granted: 1971-03-30
•
Expires: 1987-12-15
Abstract
Abstract ZERO-VALENT COMPLEXES OF GROUP VIII METALS, OXYGEN AND AN ELECTRON DONOR SUCH AS, FOR EXAMPLE, A GROUP V METAL TRIVALENT COMPOUND, E.G., TRIPHENYL PHOSPHINE; PRODUCTION OF SUCH ZERO-VALENT COMPLEXES BY REACTING A ZEROVALENT COMPOUND OF A GROUP VIII METAL AND AN ELECTRON DONOR WITH MOLECULAR OXYGEN PREFERABLY AT A TEMPERATURE OF ABOUT - 100 TO ABOUT 75*C. THESE COMPLEXES CAN BE USED AS OXYGEN TRANSFER AGENTS AND FOR THE PREPARATION OF FINELY DIVIDED, HIGHLY ACTIVE METALS OF SUB-GROUP VIII OF THE PERIODIC TABLE.
Inventors
- 👤 Gunther Wilke
- 👤 Paul Heimbach
- 👤 Herbert Schott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:37
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F15/00; C07F15/0006; C07F15/006; C07F15/0066; C07F15/0086; C07F15/0093; C07F15/02; C07F15/025; C07F15/04; C07F15/045; C07F15/06; C07F15/065
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |