US2709699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extracting hemicelluloses
Assignee: Individual
•
Filing: 1952-07-18
•
Granted: 1955-05-31
•
Expires: 1972-07-18
Abstract
No abstract record available.
Inventors
- 👤 Michael J Wolf
- 👤 John A Cannon
- 👤 Majel M Macmasters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:11
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE METHOD COMPRISING HEATING CORN HULLS IN AQUEOUS ALKALINE MEDIUM TO A TEMPERATURE WITHIN THE RANGE OF 90* C. TO 115* C. AT A PH WITHIN THE RANGE OF 9 TO 13 FOR A TIME SUFFICIENT TO SOLUBILIZE THE HEMICELLULOSES PRESENT AND SUBSEQUENTLY REMOVING THE HEMICELLULOSES FROM SAID SUBSTANCE BY EXTRACTION.
Claim 2
Independent Claim
51 words
THE METHOD COMPRISING HEATING CORN HULLS IN AQUEOUS ALKALINE MEDIUM TO A TEMPERATURE WITHIN THE RANGE OF 90* C. TO 115* C. AT A PH WITHIN THE RANGE OF 9 TO 13 FOR A TIME SUFFICIENT TO SOLUBILIZE THE HEMICELLULOSES PRESENT AND SUBSEQUENTLY REMOVING THE HEMICELLULOSES FROM SAID SUBSTANCE BY EXTRACTION.
References Cited (Backward Citations)
US2073616A
Cited
US2218567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |