Patent EP0268561A2 successfully refreshed from Google Patents.
US2809952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulating and coating composition and products treated therewith
Assignee: General Electric Co
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Filing: 1955-06-10
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Granted: 1957-10-15
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Expires: 1975-06-10
Abstract
No abstract record available.
Inventors
- 👤 Harry B Bolson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:04
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4215; C08L; C08L63/00; C08L67/00; C08L67/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A HEAT-CURABLE, ENCAPSULATING COMPOSITION COMPRISING, BY WEIGHT, (1) FROM 18 TO 25 PERCENT OF A COMPLEX EPOXIDE RRESIN CONTAINING EPOXY GROUPS AND COMPRISING A POLYETHER DERIVATIVE OBTAINED BY REACTING AN EPIHALOGENOHYDRIN WITH A POLYHYDRIC ORGANIC COMPOUND, (2) FROM 18 TO 25 PERCENT OF AN ADDUCT OF MALEIC ANHYDRIDE AND HEACHLOROCYCLOPENTADIENE, AND (3) FROM 55 TO 64 PERCENT OF MIXTURE OF INGREDIENTS COMPRISING, BY WEIGHT, FROM 0.8 TO 1.4 PARTS PORPYLENE GLYCOL ADIPATE MALEATE TO 1 PART OF A VINYL ARYL DERIVATIVE SELECTED FROM THE CLASS CONSISTING OF STYRENE AND VINYL TOLUENE, THERE BEING INCORPORATED IN THE AFORESAID ENCAPSULATING COMPOSITION A MIXTURE OF DISCRETE MICA PARTICLES COMPRISING BY WEIGHT FROM 0.75 TO 3 PARTS OF MICA PARTICLES HAVING AN AVERAGE DIAMETER OF THE ORDER OF 0.04 MM. TO 0.075 MM. TO EACH PART OF MICA PARTICLES HAVING AN AVERAGE DIAMETER OF THE ORDER OF 0.1 MM. TO 0.75 MM.
Claim 2
Dependent Claim
148 words
A HEAT-CURABLE, ENCAPSULATING COMPOSITION COMPRISING, BY WEIGHT, (1) FROM 18 TO 25 PERCENT OF A COMPLEX EPOXIDE RRESIN CONTAINING EPOXY GROUPS AND COMPRISING A POLYETHER DERIVATIVE OBTAINED BY REACTING AN EPIHALOGENOHYDRIN WITH A POLYHYDRIC ORGANIC COMPOUND, (2) FROM 18 TO 25 PERCENT OF AN ADDUCT OF MALEIC ANHYDRIDE AND HEACHLOROCYCLOPENTADIENE, AND (3) FROM 55 TO 64 PERCENT OF MIXTURE OF INGREDIENTS COMPRISING, BY WEIGHT, FROM 0.8 TO 1.4 PARTS PORPYLENE GLYCOL ADIPATE MALEATE TO 1 PART OF A VINYL ARYL DERIVATIVE SELECTED FROM THE CLASS CONSISTING OF STYRENE AND VINYL TOLUENE, THERE BEING INCORPORATED IN THE AFORESAID ENCAPSULATING COMPOSITION A MIXTURE OF DISCRETE MICA PARTICLES COMPRISING BY WEIGHT FROM 0.75 TO 3 PARTS OF MICA PARTICLES HAVING AN AVERAGE DIAMETER OF THE ORDER OF 0.04 MM. TO 0.075 MM. TO EACH PART OF MICA PARTICLES HAVING AN AVERAGE DIAMETER OF THE ORDER OF 0.1 MM. TO 0.75 MM.
References Cited (Backward Citations)
US2683131A
Cited
US2717216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |