US2900284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the saccharification of cellulose-containing material
Assignee: Individual
•
Filing: 1955-09-30
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Granted: 1959-08-18
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Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
- 👤 Oshima Motoyoshi
- 👤 Jun Kusama
- 👤 Ishii Tadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:25
CPC Classifications
C; C13; C13K; C13K1/00; C13K1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN THE PROCESS OF SACCHARIFYING CELLULOSE-CONTAINING MATERIAL BY PRETREATING THE SAID MATERIAL WITH DILUTE ACID TO REMOVE HEMI-CELLULOSE THEREFROM AND TREATING THE RESULTING RESIDUE WITH HYDROGEN CHLORIDE GAS, THE STEPS OF DRYING THE PRETREATED MATERIAL, ADDING AN AMOUNT OF HYDROCHLORIC ACID TO SAID DRIED MATERIAL SUCH THAT 45-70 PARTS OF WATER WILL BE CONTAINED IN THE SAID MIXTURE PER 100 PARTS OF SAID DRY MATERIAL, SUSPENDING SAID MIXTURE IN A HYDROGEN CHLORIDE GAS STREAM AT A TEMPERATURE BELOW 75* F., AND THEREBY CAUSING SAID MATERIAL TO ABSORB SAID HYDROGEN CHLORIDE GAS, AND SUBJECTING THE RESULTING PRODUCT TO COMPLETE HYDROLYSIS BY SUSPENDING THE SAME IN A HYDROGEN CHLORIDE GAS STREAM AT A TEMPERATURE OF THE ORDER OF 100*F.
Claim 2
Dependent Claim
117 words
IN THE PROCESS OF SACCHARIFYING CELLULOSE-CONTAINING MATERIAL BY PRETREATING THE SAID MATERIAL WITH DILUTE ACID TO REMOVE HEMI-CELLULOSE THEREFROM AND TREATING THE RESULTING RESIDUE WITH HYDROGEN CHLORIDE GAS, THE STEPS OF DRYING THE PRETREATED MATERIAL, ADDING AN AMOUNT OF HYDROCHLORIC ACID TO SAID DRIED MATERIAL SUCH THAT 45-70 PARTS OF WATER WILL BE CONTAINED IN THE SAID MIXTURE PER 100 PARTS OF SAID DRY MATERIAL, SUSPENDING SAID MIXTURE IN A HYDROGEN CHLORIDE GAS STREAM AT A TEMPERATURE BELOW 75* F., AND THEREBY CAUSING SAID MATERIAL TO ABSORB SAID HYDROGEN CHLORIDE GAS, AND SUBJECTING THE RESULTING PRODUCT TO COMPLETE HYDROLYSIS BY SUSPENDING THE SAME IN A HYDROGEN CHLORIDE GAS STREAM AT A TEMPERATURE OF THE ORDER OF 100*F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |