US3194848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dimer and trimer preparation
Assignee: Millennium Petrochemicals Inc
•
Filing: 1962-12-31
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Granted: 1965-07-13
•
Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Feldman Julian
- 👤 Bernard A Saffer
- 👤 Thomas Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:49
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/90; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
A PROCESS FOR THE PRODUCTION OF CYCLIC DIMERS AND CYCLIC TRIMERS WHICH COMPRISES POLYMERIZING A LINEAR CONJUGATED DIOLEFIN AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST WHICH IS CHARACTERIZED BY THE FORMULA:
Claim 2
Dependent Claim
34 words
A PROCESS FOR THE PRODUCTION OF CYCLIC DIMERS AND CYCLIC TRIMERS WHICH COMPRISES POLYMERIZING A LINEAR CONJUGATED DIOLEFIN AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF A CATALYST WHICH IS CHARACTERIZED BY THE FORMULA:
Claim 3
Dependent Claim
8 words
A CATALYST WHICH IS CHARACTERIZED BY THE FORMULA:
Claim 4
Dependent Claim
8 words
A CATALYST WHICH IS CHARACTERIZED BY THE FORMULA:
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |