US2633457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basing cement
Assignee: General Electric Co
•
Filing: 1949-03-19
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Granted: 1953-03-31
•
Expires: 1969-03-19
Abstract
No abstract record available.
Inventors
- 👤 Robert F Hardwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:39
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A BASING CEMENT FOR BONDING MATERIAL BASES TO GLASS ENVELOPES OF ELECTRIC DEVICES CONTAINING MARBLE FLOUR, ALCOHOL, ROSIN, PHENOL-FURFURAL RESIN INCLUDING HEXAMETHYLENETETRAMINE AND AN APPROXIMATELY 60% SOLIDS METHYL PHENYL POLYSILOXANE HEAT-CURABLE RESIN SOLUTION, SAID RESIN SOLUTION BEING PRESENT IN THE PROPORTION OF APPROXIMATELY 10 TO 50 PER CENT BY WEIGHT OF THE COMBINED WEIGHT OF ALL THE SOLIDS IN THE CEMENT.
Claim 2
Dependent Claim
61 words
A BASING CEMENT FOR BONDING MATERIAL BASES TO GLASS ENVELOPES OF ELECTRIC DEVICES CONTAINING MARBLE FLOUR, ALCOHOL, ROSIN, PHENOL-FURFURAL RESIN INCLUDING HEXAMETHYLENETETRAMINE AND AN APPROXIMATELY 60% SOLIDS METHYL PHENYL POLYSILOXANE HEAT-CURABLE RESIN SOLUTION, SAID RESIN SOLUTION BEING PRESENT IN THE PROPORTION OF APPROXIMATELY 10 TO 50 PER CENT BY WEIGHT OF THE COMBINED WEIGHT OF ALL THE SOLIDS IN THE CEMENT.
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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |