Patent US3428591A successfully refreshed from Google Patents.
US3428591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax compositions containing graft polymer of polyethylene and to paperboards coated therewith
Assignee: Atlantic Richfield Co
•
Filing: 1968-01-30
•
Granted: 1969-02-18
•
Expires: 1988-01-30
Abstract
No abstract record available.
Inventors
- 👤 Walter E F Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/10; D21H19/14; D21H19/20; D21H19/22; C; C08; C08F; C08F255/00; C08F255/02; C09; C09D; C09D191/00; C09D191/06; C09D191/08; D21H19/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804; Y10T428/31808
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3267083A
Cited
US3261798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |