Patent FR742797A successfully refreshed from Google Patents.
US2855397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reacting carbon-containing compounds with specified grignards
Assignee: Primerica Inc
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Filing: 1955-11-28
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Granted: 1958-10-07
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Ramsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:31
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; C07D239/00; C07D239/02; C07D239/24; C07D239/26; C07D263/00; C07D263/02; C07D263/30; C07D263/32; C07D277/00; C07D277/60; C07D277/62; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/22; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS COMPRISING REACTING A CARBON-CONTAINING COMPOND SELECTED FROM THE CLASS CONSISTING OF ETHYL CHLOROCARBONATE, CARBON DISULFIDE, CARBON DIOXIDE AND CARBON OXYSULFIDE, WITH AN ORGANOMAGNESIUM CHLORIDE IN THE PRESENCE OF COMPOUND Q; SAID ORGANOMAGNESIUM CHLORIDE BEING PREPARED BY REACTING AN ORGANIC CHLORIDE OF THE FORMULA RCI, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF VINYL, ARYL AND AROMATIC-HETEROCYCLIC RADICALS, WITH MAGNESIUM IN COMPOUND Q; WHEREIN SAID COMPOUND Q IS SELECTED FROM THE CLASS CONSISTING OF TETRAHYDROGURAN, TETRAHYDROPYRAN, 2-ETHOXY TETRAHYDROPYRAN, DIHYDROFURAN; AND WHEREIN SAID AROMATIC-HETEROCYCLIC TETRAHYDROFURAN; AND WHEREIN SAID AROMATIC-HETEROCYCLIC RADICAL IS SELECTED FROM THE CLASS CONSISTING OF THIENYL, A-PYRIDYL, 2-QUINOLYL, 6-QUINOLYL, 8-QUINOLYL, 2-BENZOXAZOLYL, 2-BENZOTHIAZOLYL, 2-METHYL-BENZOTHIAZOL-5-YL, 6CHLORO-2-METHOXYACRID-9-YL, 4-CHLORO-6-PYRIMIDYL, 2-FURYL, 2-CHLORO-5-THIENYL AND 2,5-THIOPEN-DI-YL.
Claim 2
Dependent Claim
112 words
A PROCESS COMPRISING REACTING A CARBON-CONTAINING COMPOND SELECTED FROM THE CLASS CONSISTING OF ETHYL CHLOROCARBONATE, CARBON DISULFIDE, CARBON DIOXIDE AND CARBON OXYSULFIDE, WITH AN ORGANOMAGNESIUM CHLORIDE IN THE PRESENCE OF COMPOUND Q; SAID ORGANOMAGNESIUM CHLORIDE BEING PREPARED BY REACTING AN ORGANIC CHLORIDE OF THE FORMULA RCI, WHEREIN R IS SELECTED FROM THE CLASS CONSISTING OF VINYL, ARYL AND AROMATIC-HETEROCYCLIC RADICALS, WITH MAGNESIUM IN COMPOUND Q; WHEREIN SAID COMPOUND Q IS SELECTED FROM THE CLASS CONSISTING OF TETRAHYDROGURAN, TETRAHYDROPYRAN, 2-ETHOXY TETRAHYDROPYRAN, DIHYDROFURAN; AND WHEREIN SAID AROMATIC-HETEROCYCLIC TETRAHYDROFURAN; AND WHEREIN SAID AROMATIC-HETEROCYCLIC RADICAL IS SELECTED FROM THE CLASS CONSISTING OF THIENYL, A-PYRIDYL, 2-QUINOLYL, 6-QUINOLYL, 8-QUINOLYL, 2-BENZOXAZOLYL, 2-BENZOTHIAZOLYL, 2-METHYL-BENZOTHIAZOL-5-YL, 6CHLORO-2-METHOXYACRID-9-YL, 4-CHLORO-6-PYRIMIDYL, 2-FURYL, 2-CHLORO-5-THIENYL AND 2,5-THIOPEN-DI-YL.
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |