US3338883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for modifying polymeric materials, and modifier reactants for such use
Assignee: JP Stevens and Co Inc
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Filing: 1965-05-12
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Granted: 1967-08-29
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Giuliana C Tesoro
- 👤 Stephen B Sello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:48
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07C; C07C69/00; C07C69/02; C07C69/12; C07C69/16; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08B31/00; C08B31/003; C08B31/006; C08B31/08; C08B31/12; C08B31/125; C08B37/00; C08F; C08F8/00; D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/13; D06M13/322; D06M13/345; D06M13/348
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A METHOD OF TREATING A POLYMERIC MATERIAL CONTAINING HYDROXYL GROUPS AND SELECTED FROM THE CLASS CONSISTING OF STARCHES, CELLULOSE, REGENRATED CELLULOSE, MODIFIED CELLULOSE, POLYVINYL ALCOHOL AND AT LEAST PARTIALLY HYDROLYZED VINYL ACETATE POLYMERS, COMPRISING THE STEP OF REACTING SAID MATERIAL UNDER ALKALINE CONDITIONS WITH A COMPOUND HAVING THE FORMULA:
Claim 2
Independent Claim
49 words
A METHOD OF TREATING A POLYMERIC MATERIAL CONTAINING HYDROXYL GROUPS AND SELECTED FROM THE CLASS CONSISTING OF STARCHES, CELLULOSE, REGENRATED CELLULOSE, MODIFIED CELLULOSE, POLYVINYL ALCOHOL AND AT LEAST PARTIALLY HYDROLYZED VINYL ACETATE POLYMERS, COMPRISING THE STEP OF REACTING SAID MATERIAL UNDER ALKALINE CONDITIONS WITH A COMPOUND HAVING THE FORMULA:
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |