US2721859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-drying process for making plastisol grade vinyl chloride polymers
Assignee: Uniroyal Inc
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Filing: 1954-08-16
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Granted: 1955-10-25
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Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Albert W Fuhrman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:05
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J3/122; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06; Y; Y10; Y10S; Y10S159/00; Y10S159/10; Y10S526/00; Y10S526/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD OF MAKING A PLASTISOL GRADE OF VINYL CHLORIDE RESIN COMPRISING SEPARATELY SPRAY DRYING SEPARATE PORTIONS OF VINYL CHLORIDE RESIN LATEX AT DIFFERENT TEMPERATURES WITHIN THE RANGE OF FROM 200* TO 550* F., THE SAID DIFFERENCE AMOUNTING TO AT LEAST 10* F., FINELY GRINDING THE DRIED MATERIALS TO AN AVERAGE PARTICLE SIZE WITHIN THE RANGE OF FROM 5 TO 15 MICRONS, AND MIXING THE MATERIALS THE QUANTITY OF EACH POWDER IN THE MIXTURE AMOUNTING TO AT LEAST 20% OF THE MIXTURE.
Claim 2
Independent Claim
82 words
A METHOD OF MAKING A PLASTISOL GRADE OF VINYL CHLORIDE RESIN COMPRISING SEPARATELY SPRAY DRYING SEPARATE PORTIONS OF VINYL CHLORIDE RESIN LATEX AT DIFFERENT TEMPERATURES WITHIN THE RANGE OF FROM 200* TO 550* F., THE SAID DIFFERENCE AMOUNTING TO AT LEAST 10* F., FINELY GRINDING THE DRIED MATERIALS TO AN AVERAGE PARTICLE SIZE WITHIN THE RANGE OF FROM 5 TO 15 MICRONS, AND MIXING THE MATERIALS THE QUANTITY OF EACH POWDER IN THE MIXTURE AMOUNTING TO AT LEAST 20% OF THE MIXTURE.
References Cited (Backward Citations)
US2187877A
Cited
US2553916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |