US3138564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for grafting a monomer onto an oxidized polysaccharide
Assignee: Polysar Ltd
•
Filing: 1955-10-31
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Granted: 1964-06-23
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Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Borunsky Jules
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:15
CPC Classifications
C; C08; C08F; C08F289/00; C08B; C08B15/00; C08B15/02; C08B31/00; C08B31/18; C08B37/00; C08B37/0006; C08B37/0045; C08B37/006; C08B37/0084; C08F251/00; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR GRAFTING A POLYMERIZABLE MONOMER CONTAINING A CH2=C< GROUP ON TO A POLYSACCHARIDE, WHICH PROCESS COMPRISES FORMING AN AQUEOUS DISPERSION OF SAID POLYSACCHARIDE, OXIDIZING SAID POLYSACHARIDE IN AQUEOUS DISPERSION SOLELY WITH AN OXIDIZING GAS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND OZONE, DISPERSING SAID MONOMER IN THE TREATED AQUEOUS DISPERSION OF POLYSACCHARIDE AND MAINTAINING THE MONOMER DISPERSED THEREIN WHILE THE GRAFTING POLYMERIZATION TAKES PLACE.
Claim 2
Dependent Claim
67 words
A PROCESS FOR GRAFTING A POLYMERIZABLE MONOMER CONTAINING A CH2=C< GROUP ON TO A POLYSACCHARIDE, WHICH PROCESS COMPRISES FORMING AN AQUEOUS DISPERSION OF SAID POLYSACCHARIDE, OXIDIZING SAID POLYSACHARIDE IN AQUEOUS DISPERSION SOLELY WITH AN OXIDIZING GAS SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND OZONE, DISPERSING SAID MONOMER IN THE TREATED AQUEOUS DISPERSION OF POLYSACCHARIDE AND MAINTAINING THE MONOMER DISPERSED THEREIN WHILE THE GRAFTING POLYMERIZATION TAKES PLACE.
References Cited (Backward Citations)
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Cited
US2115705A
Cited
US2388905A
Cited
GB589802A
Cited
GB573062A
Cited
GB733093A
Cited
FR1101682A
Cited
US2763625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |