US2621168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation resins of halogenated benzene compounds
Assignee: Sprague Electric Co
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Filing: 1949-09-27
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Granted: 1952-12-09
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Expires: 1969-09-27
Abstract
No abstract record available.
Inventors
- 👤 Sidney D Ross
- 👤 Markarian Moushy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:41
CPC Classifications
C; C08; C08G; C08G73/00; C08G63/00; C08G63/68
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
RESINOUS CONDENSATION PRODUCTS OF AT LEAST TWO SUBSTITUTED BENZENES IN EACH OF WHICH AT LEAST THREE AND NOT MORE THAN FOUR BENZENE HYDROGENS ARE SUBSTITUTED BY CHLORINE, AND THE REMAINING HYDROGENS ARE ALL SUBSTITUTED BY CONDENSATION RADICALS OF THE CLASS CONSISTING OF THIOL, HYDROXY, AMINO, ISOCYANATE, CARBOXYL, CARBOXYLIC CHLORIDE, CARBOXYLIC ANHYDRIDE, AND ALKYLENE GROUPS CONTAINING A MEMBER OF THE ABOVE CLASS AND NOT MORE THAN SIX ALKYLENE CARBON ATOMS, THE CONDENSATION BEING A LINKAGE BY REACTION BETWEEN A RADICAL SELECTED FROM THE THIOL, HYDROXY AND AMINO GROUPS OF ONE OF THE SUBSTITUTED BENZENES WITH ONE OF THE OTHER RADICALS OF SAID CLASS ON ANOTHER OF THE SUBSTITUTED BENZENES.
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) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |