Patent US2952710A successfully refreshed from Google Patents.
US2952710A
Expired / Lapsed
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Novel derivatives of hexachlorocyclopentadiene
Assignee: Standard Oil Co
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Filing: 1953-07-28
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Granted: 1960-09-13
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Expires: 1973-07-28
Abstract
No abstract record available.
Inventors
- 👤 Fields Ellis Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:22
CPC Classifications
C; C07; C07C; C07C23/00; C07C23/18; C07C23/20; C07C23/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
CHLORINATED 1,2,2,4,9,9-HEXACHLORO-1,4,4A,5,6,7,8,8AOCTAHYDRO-1,4-METHANO-NAPHTHALENE WHEREIN AT LEAST ONE HYDROGEN ATOM IS REPLACED BY AN EQUAL NUMBER OF CHLORINE ATOMS.
Claim 2
Dependent Claim
17 words
CHLORINATED 1,2,2,4,9,9-HEXACHLORO-1,4,4A,5,6,7,8,8AOCTAHYDRO-1,4-METHANO-NAPHTHALENE WHEREIN AT LEAST ONE HYDROGEN ATOM IS REPLACED BY AN EQUAL NUMBER OF CHLORINE ATOMS.
Claim 3
Dependent Claim
12 words
CHLORINATED 1,2,3,4,9,9-HEXACHLORO-1,4,4A,5,6,7,8,8AOCTAHYDRO-1,4-METHANO-NAPHTHALENE WHEREIN TWO HYDROGEN ATOMS ARE REPLACED BY TWO CHLORINE ATOMS.
Claim 4
Dependent Claim
12 words
CHLORINATED 1,2,3,4,9,9-HEXACHLORO-1,4,4A,5,6,7,8,8AOCTAHYDRO-1,4-METHANO-NAPHTHALENE WHEREIN TWO HYDROGEN ATOMS ARE REPLACED BY TWO CHLORINE ATOMS.
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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |