Patent US3177225A successfully refreshed from Google Patents.
US3177225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 2, 3, 4, 5, 6-hexachloro-7-nitronaphthalene and certain derivatives thereof
Assignee: Fundamental Res Co
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Filing: 1962-06-26
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Granted: 1965-04-06
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Expires: 1982-06-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph G E Fenyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:06
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07C; C07C205/00; C07C205/07; C07C205/11; C07C205/12; C07C37/00; C07C37/01; C07C37/055; C07C39/00; C07C39/24; C07C39/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A POLYCHLORINATED ANPHTHALENE DERIVATIVE HAVING THE STRUCTURE FORMULA:
Claim 2
Dependent Claim
8 words
A POLYCHLORINATED ANPHTHALENE DERIVATIVE HAVING THE STRUCTURE FORMULA:
References Cited (Backward Citations)
BE565945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |