US3793355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounds of ruthenium
Assignee: Johnson Matthey PLC
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Filing: 1972-08-08
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Granted: 1974-02-19
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Expires: 1992-08-08
Abstract
Abstract WHEREIN M1, M2 AND M3 ARE THE SAME OR DIFFERENT TRANSITION METALS SELECTED FROM THE SECOND OR THIRD SERIES OF THE PERODIC TABLE; X IS OXYGEN, SULPHUR, NITROGEN, PHOSPHORUS OR BORON; AN IS ANIONIC ELEMENT OR GROUP AND L1, L2 OR L3 ARE NEUTRAL OR ANIONIC LIGANDS. M1M2M3XAN6L1L2L3 THIS INVENTION RELATES TO A COMPOSITION OF MATTER HAVING THE GENERAL FRMULA
Inventors
- 👤 G Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:39
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/0006; C07F15/0046; C07F15/0053; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/181; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/24; B01J31/2404; C07F9/00; C07F9/02; B01J2531/00; B01J2531/02; B01J2531/0202; B01J2531/0205; B01J2531/80; B01J2531/82; B01J2531/821
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |