US3477802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of cellulose,polyvinyl alcohol and starch with compounds characterized by ethylene radicals having an electron attracting group which stabilizes carbanions on one carbon atom thereof and an alkoxy or hydroxy group on the other
Assignee: JP Stevens and Co Inc
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Filing: 1963-03-19
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Granted: 1969-11-11
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Expires: 1983-03-19
Abstract
No abstract record available.
Inventors
- 👤 Giuliana C Tesoro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:01
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/345; D06M13/348; C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08B11/193; C08B15/00; C08B15/05; C08B15/06; C08B15/10; C08B31/00; C08F; C08F8/00; D06M13/10; D06M13/12; D06M13/13; D06M13/244; D06M13/248; D06M13/272; D06M13/278
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS FOR THE CHEMICAL MODIFICATION OF POLYMERS CONTAINING HYDROXYL GROUPS SELECTED FROM THE GROUP CONSISTING OF CELLULOSIC MATERIALS, POLYVINYL ALCOHOL AND STARCH COMPRISING TREATING SAID POLYMERS WITH A REAGENT CONSISTING ESSENTIALLY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
41 words
A PROCESS FOR THE CHEMICAL MODIFICATION OF POLYMERS CONTAINING HYDROXYL GROUPS SELECTED FROM THE GROUP CONSISTING OF CELLULOSIC MATERIALS, POLYVINYL ALCOHOL AND STARCH COMPRISING TREATING SAID POLYMERS WITH A REAGENT CONSISTING ESSENTIALLY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2524399A
Cited
US2524400A
Cited
US3016281A
Cited
US3218118A
Cited
US3222119A
Cited
US3000762A
Cited
US3109695A
Cited
US3031435A
Cited
US3178250A
Cited
US3230031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |