US3223699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alkylated polysaccharide binding agents
Assignee: Ena Ets
•
Filing: 1962-03-26
•
Granted: 1965-12-14
•
Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Schlageter Rosa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:24
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/21; D21H17/24; C; C08; C08B; C08B37/00; C08B37/006; C08B37/0087; D21H19/00; D21H19/36; D21H19/44; D21H19/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS FOR THE PRODUCTION OF A BINDING AGENT WHICH IS TO BE USED FOR THE PRODUCTION OF PAPER, CARDBOARD AND PASTEBOARD COMPRISING THE STEPS: HUSKING SEEDS OF TAMARINDUS INDICA; GRINDING THE HUSKED SEEDS TO A SEED MEAL; AND TREATING THE RESULTING SEED MEAL WITH AN AQUEOUS METHANOLIC SOLUTION OF SODIUM HYDROXIDE AND A HYDROXYALKYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, ETHYLENE CHLOROHYDRIN AND PROPYLENE CHLOROHYDRIN.
Claim 2
Dependent Claim
71 words
A PROCESS FOR THE PRODUCTION OF A BINDING AGENT WHICH IS TO BE USED FOR THE PRODUCTION OF PAPER, CARDBOARD AND PASTEBOARD COMPRISING THE STEPS: HUSKING SEEDS OF TAMARINDUS INDICA; GRINDING THE HUSKED SEEDS TO A SEED MEAL; AND TREATING THE RESULTING SEED MEAL WITH AN AQUEOUS METHANOLIC SOLUTION OF SODIUM HYDROXIDE AND A HYDROXYALKYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, ETHYLENE CHLOROHYDRIN AND PROPYLENE CHLOROHYDRIN.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |