Patent US2820778A successfully refreshed from Google Patents.
US2820778A
Expired / Lapsed
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Production of polymerization products from olefinically unsaturated hydrocarbons
Assignee: BASF SE
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Filing: 1956-12-27
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Granted: 1958-01-21
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Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Spaenig Hermann
- 👤 Hensel Hans Ruprecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:30
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S260/00; Y10S260/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A PROCESS FOR THE PRODUCTION OF POLYMERIZATION PRODUCTS FROM OLEFINICALLY UNSATURATED HYDROCARBONS, WHICH COMPRISES POLYMERIZING THESE WITH THE ACID OF A MIXTURE OF A HALOGEN-CONTAINING COMPOUND OF A METAL OF THE 4TH TO 6TH SUB-GROUPS OF THE PERIODIC SYSTEM OF ELEMENTS WITH A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
48 words
A PROCESS FOR THE PRODUCTION OF POLYMERIZATION PRODUCTS FROM OLEFINICALLY UNSATURATED HYDROCARBONS, WHICH COMPRISES POLYMERIZING THESE WITH THE ACID OF A MIXTURE OF A HALOGEN-CONTAINING COMPOUND OF A METAL OF THE 4TH TO 6TH SUB-GROUPS OF THE PERIODIC SYSTEM OF ELEMENTS WITH A COMPOUND OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2491116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |