US2562200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making d-glucuronic acid and its salts
Assignee: Individual
•
Filing: 1950-04-24
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Granted: 1951-07-31
•
Expires: 1970-04-24
Abstract
No abstract record available.
Inventors
- 👤 Charles L Mehltretter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:11
CPC Classifications
C; C07; C07H; C07H7/00; C07H7/02; C07H7/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD WHICH COMPRISES OXIDIZING BY MEANS OF FREE OXYGEN-CONTAINING GAS ALPHAMETHYL-D-GLUCOSIDE IN THE PRESENCE OF A CATALYST, HYDROLYZING WITH ACID THE RESULTING OXIDATION MIXTURE CONTAINING ALPHA-METHYL-D-GLUCURONOSIDE, NEUTRALIZING THE HYDROLSATE AND TREATING THE NEUTRALIZED HYDROLYSATE WTIH ANILINE THEREBY CAUSING THE PRECIPITATION OF ANILINE N-DGLUCORONOSIDE SALT AND RECOVERING FROM SAID SALT BY ACID HYDROLYSIS D-GLUCURONIC ACID SALT.
Claim 2
Independent Claim
56 words
THE METHOD WHICH COMPRISES OXIDIZING BY MEANS OF FREE OXYGEN-CONTAINING GAS ALPHAMETHYL-D-GLUCOSIDE IN THE PRESENCE OF A CATALYST, HYDROLYZING WITH ACID THE RESULTING OXIDATION MIXTURE CONTAINING ALPHA-METHYL-D-GLUCURONOSIDE, NEUTRALIZING THE HYDROLSATE AND TREATING THE NEUTRALIZED HYDROLYSATE WTIH ANILINE THEREBY CAUSING THE PRECIPITATION OF ANILINE N-DGLUCORONOSIDE SALT AND RECOVERING FROM SAID SALT BY ACID HYDROLYSIS D-GLUCURONIC ACID SALT.
References Cited (Backward Citations)
US2520255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |