Patent US3189588A successfully refreshed from Google Patents.
US3189588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Densification of poly-alpha-olefins
Assignee: Eastman Kodak Co
•
Filing: 1960-04-01
•
Granted: 1965-06-15
•
Expires: 1980-04-01
Abstract
No abstract record available.
Inventors
- 👤 David C Hull
- 👤 Jr Hugh J Hagemeyer
- 👤 Marvin B Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:43
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J2323/00; C08J2323/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A METHOD FOR INCREASING THE BULK DENSITY OF A SOLID POLYMER WHICH CMOPRISES SLURRYING A LOW BULK DENSITY POLY-A-OLEFIN IN PARTICULATE FORM CONTAINING A SMALL PORTION OF AN INERT ORGANIC LIQUID SOLVENT IN WATER AND HEATING THE RESULTING SLURRY AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 5 TO 15*C. BELOW THE VICAT SOFTENING POINT, FOR AT LEAST ABOUT 15 MINUTES, TO FORM A POLY-A-OLEFIN OF INCREASED BULK DENSITY.
Claim 2
Independent Claim
69 words
A METHOD FOR INCREASING THE BULK DENSITY OF A SOLID POLYMER WHICH CMOPRISES SLURRYING A LOW BULK DENSITY POLY-A-OLEFIN IN PARTICULATE FORM CONTAINING A SMALL PORTION OF AN INERT ORGANIC LIQUID SOLVENT IN WATER AND HEATING THE RESULTING SLURRY AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 5 TO 15*C. BELOW THE VICAT SOFTENING POINT, FOR AT LEAST ABOUT 15 MINUTES, TO FORM A POLY-A-OLEFIN OF INCREASED BULK DENSITY.
References Cited (Backward Citations)
US2838477A
Cited
US2831846A
Cited
US2886561A
Cited
US3119797A
Cited
US2908670A
Cited
US2951067A
Cited
US2981727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |