US3328481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilicon resins
Assignee: Dow Silicones Corp
•
Filing: 1964-04-20
•
Granted: 1967-06-27
•
Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 Harold L Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:25
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/10; C08G; C08G77/00; C08G77/42; C08G77/44; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A BLOCK COPOLYMER COMPRISING (A) POLYMER BLOCKS OF THE AVERAGE STRUCTURE
Claim 2
Dependent Claim
11 words
A BLOCK COPOLYMER COMPRISING (A) POLYMER BLOCKS OF THE AVERAGE STRUCTURE
References Cited (Backward Citations)
US2637719A
Cited
US2890188A
Cited
US2917480A
Cited
US3127363A
Cited
GB848311A
Cited
GB913523A
Cited
US3202634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |