US3415798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of terpene resins
Assignee: Tenneco Chemicals Inc
•
Filing: 1966-11-01
•
Granted: 1968-12-10
•
Expires: 1986-11-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry G Sellers
- 👤 Henry E Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:37
CPC Classifications
C; C08; C08F; C08F32/00; C08F32/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
THE PRESENCE OF PRODUCING POLYTERPENE RESINS COMPRISING THE STEPS OF POLYMERIZING SUBSTANTIALLY PEROXIDEFREE TERPENE IN A SOLVENT MEDIUM IN THE PRESENCE OF A PHENOLIC ANTIOXIDANT AND A METAL HALIDE POLYMERIZATION CATALYST, AND THEREAFTER RECOVERING THE POLYTERPENE RESIN.
Claim 2
Dependent Claim
37 words
THE PRESENCE OF PRODUCING POLYTERPENE RESINS COMPRISING THE STEPS OF POLYMERIZING SUBSTANTIALLY PEROXIDEFREE TERPENE IN A SOLVENT MEDIUM IN THE PRESENCE OF A PHENOLIC ANTIOXIDANT AND A METAL HALIDE POLYMERIZATION CATALYST, AND THEREAFTER RECOVERING THE POLYTERPENE RESIN.
References Cited (Backward Citations)
US2319386A
Cited
US3255255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |