US2765286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of polymer-resin granules
Assignee: NAT STARCH PRODUCTS Inc
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Filing: 1952-01-05
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Granted: 1956-10-02
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Expires: 1972-01-05
Abstract
No abstract record available.
Inventors
- 👤 Albert I Goldberg
- 👤 Robert F Doering
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:44
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005; B; B29; B29B; B29B9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF PRODUCING POLYMER-RESIN BEADS WHICH CONSISTS IN SUSPENDING HIGH MOLECULAR WEIGHT POLYMER BEADS IN A SUSPENSION MEDIUM, IN MIXING THE SUSPENDED POLYMER BEADS AND A RESIN IN THE PRESENCE OF A SOLVENT WHICH IS SOLVENT FOR THE POLYMER AND THE RESIN, SAID SOLVENT BEING SUBSTANTIALLY INSOLUBLE IN THE SUSPENSION MEDIUM AND BEING IN AMOUNT SUFFICIENT TO SOFTEN AND SWELL THE POLYMER BEADS BUT TO MAINTAIN THE SAME IN BEAD AND SUSPENDED FORM, THE HIGH MOLECULAR WEIGHT POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000 AND THE RESIN HAVING A MOLECULAR WEIGHT OF LESS THAN 10,000, THEREBY INCORATING THE RESIN INTO THE HIGH POLYMER BEADS AND PRODUCING HIGH POLYMER BEADS HAVING THE RESIN INIFORMLY DISPERSED THEREIN, AND SEPARATING THE BEADS FROM THESUSPENSIN AND DRYING THE SAME.
Claim 2
Independent Claim
128 words
THE METHOD OF PRODUCING POLYMER-RESIN BEADS WHICH CONSISTS IN SUSPENDING HIGH MOLECULAR WEIGHT POLYMER BEADS IN A SUSPENSION MEDIUM, IN MIXING THE SUSPENDED POLYMER BEADS AND A RESIN IN THE PRESENCE OF A SOLVENT WHICH IS SOLVENT FOR THE POLYMER AND THE RESIN, SAID SOLVENT BEING SUBSTANTIALLY INSOLUBLE IN THE SUSPENSION MEDIUM AND BEING IN AMOUNT SUFFICIENT TO SOFTEN AND SWELL THE POLYMER BEADS BUT TO MAINTAIN THE SAME IN BEAD AND SUSPENDED FORM, THE HIGH MOLECULAR WEIGHT POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000 AND THE RESIN HAVING A MOLECULAR WEIGHT OF LESS THAN 10,000, THEREBY INCORATING THE RESIN INTO THE HIGH POLYMER BEADS AND PRODUCING HIGH POLYMER BEADS HAVING THE RESIN INIFORMLY DISPERSED THEREIN, AND SEPARATING THE BEADS FROM THESUSPENSIN AND DRYING THE SAME.
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |