US3737476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparation of polymers of propylene and/or butylenes
Assignee: Naphtachimie SA
•
Filing: 1970-09-21
•
Granted: 1973-06-05
•
Expires: 1990-09-21
Abstract
Abstract THE POLYMERIZATION OF PROPYLENE AND/OR BUTYLENES TO PRODUCE LIQUID POLYMERS IN HIGH YIELD AND WITH A HIGH REACTION RAE IN WHICH THE MONOMER OR MONOMERS ARE REACTED IN THE PRESENCE OF AN INERT SOLVENT CONTAINING IN SUSPENSION CATALYTIC SUBSTANCES FORMED OF HALOGENATED DERIVATIVES OF TITANIUM AND/OR VANADIUM, ORGANO-ALUMINUM COMPOUNDS AND HALOGENATED DERIVATIVES OF METHANE AND/ OR ETHANE.
Inventors
- 👤 J Bailly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:26
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/04; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |