US3053880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of acyclic alpha or beta diol isomers
Assignee: Union Carbide Corp
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Filing: 1960-03-15
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Granted: 1962-09-11
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Expires: 1980-03-15
Abstract
No abstract record available.
Inventors
- 👤 Dale Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:24
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/02; C07F5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR THE SEPARATION OF ISOMERS SELECTED FROM THE GROUP CONSISTING OF OPEN-CHAIN A- AND OPENCHAIN B-DIOLS AND MIXTURES THEREOF, SAID DIOLS HAVING TERMINAL GROUPS SELECTED FROM THE GROUPING CONSISTING OF ALIPHATIC AND ARYL GROUPS WHICH ARE STERICALLY LARGER THAN METHYL GROUPS AND THE TERTIARY CARBON ATOMS OF SAID DIOLS HAVING NOT MORE THAN ONE SUBSTITUENT STERICALLY LARGER THAN A METHYL GROUP, WHICH COMPRISES CONTACTING SAID ISOMERS WITH AN ALKALI METAL BORATE TO SELECTIVELY FORM A STAABLE DIOL-BORATE COMPLEX OF ONE ISOMER, AND THEREAFTER SEPARATING SAID STABLE COMPLEX FROM THE NON-COMPLEXED ISOMER.
Claim 2
Dependent Claim
93 words
A PROCESS FOR THE SEPARATION OF ISOMERS SELECTED FROM THE GROUP CONSISTING OF OPEN-CHAIN A- AND OPENCHAIN B-DIOLS AND MIXTURES THEREOF, SAID DIOLS HAVING TERMINAL GROUPS SELECTED FROM THE GROUPING CONSISTING OF ALIPHATIC AND ARYL GROUPS WHICH ARE STERICALLY LARGER THAN METHYL GROUPS AND THE TERTIARY CARBON ATOMS OF SAID DIOLS HAVING NOT MORE THAN ONE SUBSTITUENT STERICALLY LARGER THAN A METHYL GROUP, WHICH COMPRISES CONTACTING SAID ISOMERS WITH AN ALKALI METAL BORATE TO SELECTIVELY FORM A STAABLE DIOL-BORATE COMPLEX OF ONE ISOMER, AND THEREAFTER SEPARATING SAID STABLE COMPLEX FROM THE NON-COMPLEXED ISOMER.
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |