US3008940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water removal from polymers
Assignee: —
•
Filing: —
•
Granted: 1961-11-14
•
Expires: 1978-11-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:55
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/26; C08F6/28; B; B29; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
79 words
IN THE REMOVAL OF WATER FROM A THERMOPLASTIC POLYMER HAVING AT LEAST 8 WEIGHT PERCENT WATER ASSOCIATED THEREWITH BY SQUEEZING AT A TEMPERATURE BELOW THE SOFTENING TEMPERATURE OF SAID POLYMER THROUGH DIES IN AT LEAST TWO STAGES, THE IMPROVEMENT OF CONVEYING THE RESULTING POLYMER AND FREED WATER BETWEEN SAID STAGES TO A WATER SEPARATION ZONE AND THEN UP AN INCLINE TO DRAIN FREE WATER FROM THE POLYMER AND MAINTAINING A WATER LEVEL AT THE LOWER LEVEL OF SAID INCLINE.
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) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |