US3238173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polystyrene-polyisoprene-polystyrene block copolymer latices and process for their preparation
Assignee: Shell USA Inc
•
Filing: 1962-09-27
•
Granted: 1966-03-01
•
Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph T Bailey
- 👤 David D Nyberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:50
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/07; C08F; C08F6/00; C08F6/14; C08F6/20; C08L; C08L53/00; C08L53/02; C08J2353/00; C08J2353/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
THE PROCESS FOR THE PREPARATION OF A STBLE REINFORCED LATEX COMPOSITION WHICH COMPRISES (A) EMULSIFYING A CEMENT OF A BLOCK COPOLYMER HAVING THE GENERAL CONFIGURATION
Claim 2
Dependent Claim
25 words
THE PROCESS FOR THE PREPARATION OF A STBLE REINFORCED LATEX COMPOSITION WHICH COMPRISES (A) EMULSIFYING A CEMENT OF A BLOCK COPOLYMER HAVING THE GENERAL CONFIGURATION
References Cited (Backward Citations)
US2799662A
Cited
US3078254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |