US3399249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfopropylated olefin block copolymers having terminal segments containing amno groups
Assignee: Dart Industries Inc
•
Filing: 1966-01-12
•
Granted: 1968-08-27
•
Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Donald E Hostetler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:28
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/26; C08L23/32; C08F; C08F8/00; C08F8/34; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR IMPROVING THE DYEABILITY OF OLEFIN BLOCK COPOLYMER COMPOSITIONS CONTAINING IN THE POLYMER CHAINS THE GROUPING
Claim 2
Dependent Claim
18 words
A PROCESS FOR IMPROVING THE DYEABILITY OF OLEFIN BLOCK COPOLYMER COMPOSITIONS CONTAINING IN THE POLYMER CHAINS THE GROUPING
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) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |