US3449291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored polymer powders
Assignee: Millennium Petrochemicals Inc
•
Filing: 1966-06-15
•
Granted: 1969-06-10
•
Expires: 1986-06-15
Abstract
No abstract record available.
Inventors
- 👤 Frank Lerman
- 👤 Raymond C Bartsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:46
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; Y; Y10; Y10S; Y10S524/00; Y10S524/904
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |