US2813375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a glass seal
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1955-08-16
•
Granted: 1957-11-19
•
Expires: 1975-08-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Alfred Lippman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:27
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A METHOD OF SEALING A PORT OF A GLASS OBJECT WHICH PORT IS DEFINED BY WALL MEANS OF THE OBJECT, SAID METHOD COMPRISING THE STEPS OF CLOSING THE PORT BY COMPRESSING A COMPRESSIBLE CLOSURE AGAINST THE WALL MEANS OF THE PROT, FLOWING A FUSED INORGANIC SALT OVER SAID CLOSURE TO SUBSTANTIALLY COMPLETELY FILL THE PORT, SAID SALT HAVING A LOWER FUSION POINT THAN THAT OF THE GLASS OF THE OBJECT, SETTING THE FUSED SALT, AND WHILE THE SALT IS SET BUT STILL HEATED APPLYING A MOLTEN GLAZE WHICH IS ADHERENT TO THE SALT OVER THE WHOLE SURFACE OF THE SALT.
Claim 2
Dependent Claim
101 words
IN A METHOD OF SEALING A PORT OF A GLASS OBJECT WHICH PORT IS DEFINED BY WALL MEANS OF THE OBJECT, SAID METHOD COMPRISING THE STEPS OF CLOSING THE PORT BY COMPRESSING A COMPRESSIBLE CLOSURE AGAINST THE WALL MEANS OF THE PROT, FLOWING A FUSED INORGANIC SALT OVER SAID CLOSURE TO SUBSTANTIALLY COMPLETELY FILL THE PORT, SAID SALT HAVING A LOWER FUSION POINT THAN THAT OF THE GLASS OF THE OBJECT, SETTING THE FUSED SALT, AND WHILE THE SALT IS SET BUT STILL HEATED APPLYING A MOLTEN GLAZE WHICH IS ADHERENT TO THE SALT OVER THE WHOLE SURFACE OF THE SALT.
References Cited (Backward Citations)
US2720009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |