US3766133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene filled and unfilled molding powders and theirpreparation
Assignee: EIDP Inc
•
Filing: 1971-07-16
•
Granted: 1973-10-16
•
Expires: 1991-07-16
Abstract
Abstract IMPROVING POWDER FLOW OF FINELY GROUND POLYTETRALFUOROETHYLENE RESIN BY DEAGGLOMERATION AND CONTROLLED DRY OR WET REAGGLOMERATION. THE PRODUCTS ARE AGGLOMERATES OF FILLED OR UNFILLED FINELY GROUND POLYTETRAFLUOROETHYLENE RESINS HAVING AN APPARENT DENSITY OF 400 TO 1100 GRAMS PER LITER AND A POWDER FLOW INDEX OF AT LEAST 4 GRAMS PER SECOND.
Inventors
- 👤 R Roberts
- 👤 R Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:03
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; B; B29; B29B; B29B9/00; B29B9/08; C08J3/20; C08J3/203; C08K; C08K3/00; C08K3/01; C08K3/013; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |