US2595679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystallization process
Assignee: Atlas Powder Co
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Filing: 1950-11-03
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Granted: 1952-05-06
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Expires: 1970-11-03
Abstract
No abstract record available.
Inventors
- 👤 Baak W Lew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J2367/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS OF CONVERTING AN AMORPHOUS CRYSTALLIZABLE LINEAR POLYESTER INTO A GRANULAR CRYSTALLINE FORM WHICH COMPRISES BRINGING THE SAID AMORPHOUS POLYESTER TO A TEMPERATURE OF NOT MORE THAN ABOUT 30* C. BELOW THE MELTING POINT OF THE CRYSTALLINE FORM OF SAID POLYESTER, AND SUBJECTING IT TO A KNEADING ACTION IN THE PRESENCE OF ADDED WATER UNTIL THE POLYESTER MASS LOSES ITS COHESIVENESS AND DISINTEGRATES INTO A GRANULAR SOLID.
Claim 2
Dependent Claim
68 words
THE PROCESS OF CONVERTING AN AMORPHOUS CRYSTALLIZABLE LINEAR POLYESTER INTO A GRANULAR CRYSTALLINE FORM WHICH COMPRISES BRINGING THE SAID AMORPHOUS POLYESTER TO A TEMPERATURE OF NOT MORE THAN ABOUT 30* C. BELOW THE MELTING POINT OF THE CRYSTALLINE FORM OF SAID POLYESTER, AND SUBJECTING IT TO A KNEADING ACTION IN THE PRESENCE OF ADDED WATER UNTIL THE POLYESTER MASS LOSES ITS COHESIVENESS AND DISINTEGRATES INTO A GRANULAR SOLID.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |