Patent US2599531A successfully refreshed from Google Patents.
US2599531A
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Preparation of pectinesterase
Assignee: Rohm and Haas Co
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Filing: 1949-11-14
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Granted: 1952-06-10
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Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Carl V Smythe
- 👤 Drake Billy Blandin
- 👤 Miller John Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:04
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/16; C12N9/18; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/915; Y10S435/918; Y10S435/933
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR PREPARING PECTINESTERASE SUBSTANTIALLY FREE FROM POLYGALACTURONASE WHICH COMPRISES TREATING AT A PH BETWEEN 1.5 AND 9.5 AN AQUEOUS SOLUTION OF AN ENZYME SYSTEM CONTAIN ING BOTH POLYGALACTURONASE AND PECTINESTERAWITH A MEMBER OF THE CLASS CONSISTING OF UREA AND THIOUREA AT A HIGH CONCENTRATION IN SAID SOLUTION, THE TEMPERATURE OF TREATING BEING BETWEEN 5* AND 60* C. WHEN UREA IS USED AND BETWEEN 5* AND 30* C. WHEN THIOUREA IS USED.
Claim 2
Dependent Claim
73 words
A PROCESS FOR PREPARING PECTINESTERASE SUBSTANTIALLY FREE FROM POLYGALACTURONASE WHICH COMPRISES TREATING AT A PH BETWEEN 1.5 AND 9.5 AN AQUEOUS SOLUTION OF AN ENZYME SYSTEM CONTAIN ING BOTH POLYGALACTURONASE AND PECTINESTERAWITH A MEMBER OF THE CLASS CONSISTING OF UREA AND THIOUREA AT A HIGH CONCENTRATION IN SAID SOLUTION, THE TEMPERATURE OF TREATING BEING BETWEEN 5* AND 60* C. WHEN UREA IS USED AND BETWEEN 5* AND 30* C. WHEN THIOUREA IS USED.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |