US3058967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of converting powdered polymers to granular form
Assignee: Individual
•
Filing: 1954-03-02
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Granted: 1962-10-16
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Expires: 1974-03-02
Abstract
No abstract record available.
Inventors
- 👤 Mortimer H Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:48
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
52 words
A PROCESS FOR INCREASING THE BULK DENSITY OF A SOLID HOMOPOLYMER OF CHLOROTRIFLUOROETHYLENE WHICH COMPRISES SPREADING THE POLYMER IN THE FORM OF A POWDER IN A THIN LAYER, HEATING SAID LAYER TO A TEMPERATURE OF FROM 232 TO 302*C. RO FORM A SINTERED MASS AND MECHANICALLY REDUCING SAID MASS TO GRANULAR FORM.
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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |