Patent US3210101A successfully refreshed from Google Patents.
Patent US3135784A successfully refreshed from Google Patents.
US3135784A
Expired / Lapsed
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Process for the production of esters
Assignee: Halcon Research and Development Corp
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Filing: 1961-06-29
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Granted: 1964-06-02
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Expires: 1981-06-29
Abstract
No abstract record available.
Inventors
- 👤 Jack B Feder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:11
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J31/02; B01J31/04; B01J31/40; B01J31/4015; C; C07; C07C; C07C67/00; C07C67/04; C07F; C07F5/00; C07F5/02; C07F5/025; B01J21/00; B01J21/18; B01J37/00; B01J37/02; B01J37/0201; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD FOR AVOIDING DEACTIVATION OF AN ACTIVE CARBON IMPREGNATED WITH ZINC ACETATE CATALYST WHICH IS EFFECTIVE IN THE VAPOR PHASE PRODUCTION OF ESTERS BY THE REACTION OF A MEMBER OF THE GROUP CONSISTING OF METHYL ACETYLENE, PROPADIENE, AND ACETYLENE WITH A MEMBER OF THE GROUP CONSISTING OF A SATURATED ALIPHATIC MONOCARBOXYLIC ACID CONTIANING ONE TO SEVEN CARBON ATOMS AND BENZOIC ACID DURING PERIODS WHEN THE SAID REACTION IS DISCONTINUED WHICH COMPRISES PURGING SAID CATALYST WITH A NON-DESTRUCTIVE GAS SELECTED FROM THE GRUOP CONSISTING OF NITROGEN, CARBON DIOXIDE, ACETYLENE, METHYL ACETYLENE, PROPADIENE, AND METHANE DURING A PERIOD OF TEMPORARY DISCONTINUANCE OF SAID REACTION.
Claim 2
Independent Claim
103 words
THE METHOD FOR AVOIDING DEACTIVATION OF AN ACTIVE CARBON IMPREGNATED WITH ZINC ACETATE CATALYST WHICH IS EFFECTIVE IN THE VAPOR PHASE PRODUCTION OF ESTERS BY THE REACTION OF A MEMBER OF THE GROUP CONSISTING OF METHYL ACETYLENE, PROPADIENE, AND ACETYLENE WITH A MEMBER OF THE GROUP CONSISTING OF A SATURATED ALIPHATIC MONOCARBOXYLIC ACID CONTIANING ONE TO SEVEN CARBON ATOMS AND BENZOIC ACID DURING PERIODS WHEN THE SAID REACTION IS DISCONTINUED WHICH COMPRISES PURGING SAID CATALYST WITH A NON-DESTRUCTIVE GAS SELECTED FROM THE GRUOP CONSISTING OF NITROGEN, CARBON DIOXIDE, ACETYLENE, METHYL ACETYLENE, PROPADIENE, AND METHANE DURING A PERIOD OF TEMPORARY DISCONTINUANCE OF SAID REACTION.
References Cited (Backward Citations)
US2715140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |