US2964513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer recovery process
Assignee: Phillips Petroleum Co
•
Filing: 1956-08-20
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Granted: 1960-12-13
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Glenn H Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:44
CPC Classifications
C; C08; C08C; C08C2/00; C08C2/06; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF FORMING DENSE, SOLID, PARTICULATE POLYMER OF ALIPHATIC MONOOLEFINS HAVING A MAXIMUM OF 4 CARBON ATOMS PER MOLECULE FROM A VISCOUS SOLUTION OF ABOUT 2 TO 10 WEIGHT PERCENT OF SAID POLYMER IN A HYDROCARBON SOLVENT SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC HYDROCARBONS AND PARAFFINIC HYDROCARBONS OF FROM 3 TO 12 CARBON ATOMS PER MOLECULE WHICH COMPRISES PASSING SAID SOLUTION INTO DROPLET FORM, VAPORIZING DISPERSING SAID SOLUTION INTO DROPLET FORM, VAPORIZING SAID SOLVENT THUS PRECIPITATING SOLID POLYMER PARTICLES, ALLOWING SAID PARTICLES TO FALL THROUGH A FIRST ATMOSPHERE
Claim 2
Independent Claim
90 words
A METHOD OF FORMING DENSE, SOLID, PARTICULATE POLYMER OF ALIPHATIC MONOOLEFINS HAVING A MAXIMUM OF 4 CARBON ATOMS PER MOLECULE FROM A VISCOUS SOLUTION OF ABOUT 2 TO 10 WEIGHT PERCENT OF SAID POLYMER IN A HYDROCARBON SOLVENT SELECTED FROM THE GROUP CONSISTING OF NAPHTHENIC HYDROCARBONS AND PARAFFINIC HYDROCARBONS OF FROM 3 TO 12 CARBON ATOMS PER MOLECULE WHICH COMPRISES PASSING SAID SOLUTION INTO DROPLET FORM, VAPORIZING DISPERSING SAID SOLUTION INTO DROPLET FORM, VAPORIZING SAID SOLVENT THUS PRECIPITATING SOLID POLYMER PARTICLES, ALLOWING SAID PARTICLES TO FALL THROUGH A FIRST ATMOSPHERE
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |