Patent US4980066A successfully refreshed from Google Patents.
Patent US3718504A successfully refreshed from Google Patents.
US3718504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extracting sugars from cattle manure
Assignee: Feed Recycling Co
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Filing: 1972-06-12
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Granted: 1973-02-27
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Expires: 1992-06-12
Abstract
Abstract PROCESS FOR EXTRACTING SUGARS FROM THE CELLULOSIC RESIDUE TO CATTLE MANURE. THE MANURE IS FIRST TREATED TO REMOVE PROTEIN AND PROTEINACEOUS COMPOUNDS. THE CELLULOSIC RESIDUE IS THEN TREATED IN WATER WITH SULPHUR DIOXIDE (SO2) OR SODIUM HYDROSULFITE (NA2S2O4), WHICH ACTS AS A REDUCING AGENT, AND IT IS THEN SUBJECTED TO AN ACID HYDROLYSIS REACTION TO CONVERT TO SUGARS AFTER WHICH THE SUGARS ARE REMOVED.
Inventors
- 👤 B Whittingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:12
CPC Classifications
C; C13; C13K; C13K1/00; C13K1/02; C13K13/00; Y; Y10; Y10S; Y10S530/00; Y10S530/859
Claims Analysis
Total Claims: 0
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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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |