US3350291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing strained polycyclic hydrocarbons
Assignee: International Business Machines Corp
•
Filing: 1964-09-25
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Granted: 1967-10-31
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Expires: 1984-09-25
Abstract
No abstract record available.
Inventors
- 👤 Srinivasan Rangaswamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:51
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/22; B01J31/2282; B01J31/2295; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/31; B01J2231/00; B01J2231/50; B01J2231/52; B01J2531/00; B01J2531/10; B01J2531/16; B01J31/26; B01J31/28; B01J31/30; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A METHOD OF PREPARING TRICYCLO-(3.3.0.02,6)OCTANE WHICH COMPRISES EXPOSING 1,5-CYCLOOCTADIENE, SATURATED WITH CUPROUS CHLORIDE AS THE PHOTOISOMERIZING CATALYST, TO ACTINIC LIGHT.
Claim 2
Independent Claim
20 words
A METHOD OF PREPARING TRICYCLO-(3.3.0.02,6)OCTANE WHICH COMPRISES EXPOSING 1,5-CYCLOOCTADIENE, SATURATED WITH CUPROUS CHLORIDE AS THE PHOTOISOMERIZING CATALYST, TO ACTINIC LIGHT.
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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |