Patent US3143542A successfully refreshed from Google Patents.
US3143542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the reduction of organic compounds
Assignee: Individual
•
Filing: 1961-03-29
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Granted: 1964-08-04
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Expires: 1981-03-29
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Karl
- 👤 Schneider Josef
- 👤 Schneider Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:15
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30; C07C; C07C209/00; C07C209/44; C07C209/48; C07C209/52; C07C209/68; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/143; C07C29/147; C07C35/00; C07C35/22; C07C35/23; C07C35/28; C07C35/29; C07C35/30; C07C403/00; C07C403/06; C07C403/08; C07C45/00; C07C45/41; C07D295/00; C07D295/02; C07D295/023; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/42; C07D307/44; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/14; C07D333/16; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16; C07C2602/00; C07C2602/36; C07C2602/42; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/06; C07C2603/10; C07C2603/12; C07C2603/18; C07C2603/22; C07C2603/24; C07C2603/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN THE REDUCTION OF AN ORGANIC COMPOUND CONTAINING A FUNCTIONAL GROUP CONSISTING OF CARBON AND ANOTHER ELEMENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND NITROGEN AND CONTAINING A MULTIPLE BOND BETWEEN SAID CARBON AND SAID OTHER ELEMENT, THE STEP OF REDUCING SUCH MULTIPLE BOND TO A BOND OF LESS NUMBER, WHICH COMPRISES REACTING SAID COMPOUND WITH A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM DIALKYL HYDRIDES, ALUMINUM TRIALKYLS IN WHICH ALUMINUM TRIALKYLS AT LEAST ONE ALKYL IS AN ISOALKYL BEING BRANCHED AT THE B CARBON ATOM AND THEIR ADDITION COMPOUNDS WITH ONE MOLE OF AN ALKALI METAL HYDRIDE TO PRODUCE A REACTION PRODUCT IN WHICH HYDROGEN SUPPLIED BY ACID REDUCING AGENT IS ADDED TO SAID CARBON AND THE ALUMINUM-CONTAINING RADICAL OF SAID REDUCING AGENT IS ADDED TO SAID OTHER ELEMENT WHEREBY THE NUMBER OF BONDS IS SAID MULTIPLE BOND IS REDUCED.
Claim 2
Dependent Claim
144 words
IN THE REDUCTION OF AN ORGANIC COMPOUND CONTAINING A FUNCTIONAL GROUP CONSISTING OF CARBON AND ANOTHER ELEMENT SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND NITROGEN AND CONTAINING A MULTIPLE BOND BETWEEN SAID CARBON AND SAID OTHER ELEMENT, THE STEP OF REDUCING SUCH MULTIPLE BOND TO A BOND OF LESS NUMBER, WHICH COMPRISES REACTING SAID COMPOUND WITH A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM DIALKYL HYDRIDES, ALUMINUM TRIALKYLS IN WHICH ALUMINUM TRIALKYLS AT LEAST ONE ALKYL IS AN ISOALKYL BEING BRANCHED AT THE B CARBON ATOM AND THEIR ADDITION COMPOUNDS WITH ONE MOLE OF AN ALKALI METAL HYDRIDE TO PRODUCE A REACTION PRODUCT IN WHICH HYDROGEN SUPPLIED BY ACID REDUCING AGENT IS ADDED TO SAID CARBON AND THE ALUMINUM-CONTAINING RADICAL OF SAID REDUCING AGENT IS ADDED TO SAID OTHER ELEMENT WHEREBY THE NUMBER OF BONDS IS SAID MULTIPLE BOND IS REDUCED.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |