US2537638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6, 6-dimethyl-2-vinyl-bicyclo-(3.1.1)-2-heptene and its production
Assignee: Bridgestone Firestone Inc
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Filing: 1949-03-17
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Granted: 1951-01-09
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Expires: 1969-03-17
Abstract
No abstract record available.
Inventors
- 👤 Leland J Kitchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:21
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/28; C07C13/32; C07C13/39; C07C13/42; C07C13/43; C07C1/00; C07C1/20; C07C1/24; C07C2602/00; C07C2602/36; C07C2602/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
6,6-DIMETHYL-2-VINYL-BICYCLO (3.1.1)-2-HEPTENE.
Claim 2
Dependent Claim
2 words
6,6-DIMETHYL-2-VINYL-BICYCLO (3.1.1)-2-HEPTENE.
Claim 3
Dependent Claim
64 words
THE PROCESS OF PRODUCING 6,6-DIMETHYL-2VINYL-BICYCLO (3.1.1)-2-HEPTENE WHICH COMPRISES DEHYDRATING 6,6-DIMETHYL-2-(2-HYDROXYETHYL)BICYCLO (3.1.1)-2-HEPTENE BY HEATING WITH A WATER-SOLUBLE ORGANIC DILUENT AT A TEMPERATURE OF 180 TO 210* C. IN THE PRESENCE OF A BASIC CATALYST OF THE CLASS CONSISTING OF THE OXIDES AND HYDROXIDES OF METALS OF GROUPS I TO III OF THE PERIODIC SYSTEM, AND SEPARATING THE DILUENT FROM THE HEPTENE BY WASHING WITH WATER.
Claim 4
Dependent Claim
64 words
THE PROCESS OF PRODUCING 6,6-DIMETHYL-2VINYL-BICYCLO (3.1.1)-2-HEPTENE WHICH COMPRISES DEHYDRATING 6,6-DIMETHYL-2-(2-HYDROXYETHYL)BICYCLO (3.1.1)-2-HEPTENE BY HEATING WITH A WATER-SOLUBLE ORGANIC DILUENT AT A TEMPERATURE OF 180 TO 210* C. IN THE PRESENCE OF A BASIC CATALYST OF THE CLASS CONSISTING OF THE OXIDES AND HYDROXIDES OF METALS OF GROUPS I TO III OF THE PERIODIC SYSTEM, AND SEPARATING THE DILUENT FROM THE HEPTENE BY WASHING WITH WATER.
References Cited (Backward Citations)
US2455110A
Cited
US2465486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |