US3210171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of supplying heat of fusion to glass-to-glass seal
Assignee: GTE Sylvania Inc
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Filing: 1960-09-12
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Granted: 1965-10-05
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 William J Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:00
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/20; H01J2893/00; H01J2893/0033; H01J2893/0037
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A METHOD OF APPLYING HEAT AROUND THE PERIPHERY OF A PREDETERMINED AREA ONLY OF A WORKPIECE COMPRISING THE STEPS OF PROVIDING A FILAMENTARY SOURCE OF THERMAL ENERGY OF A SHAPE SYMMETRICAL WITH THE PERIPHERY OF SAID AREA, PROVIDING AT A LOCATION REMOTE FROM SAID SOURCE A SUPPORT ON WHICH THE WORKPIECE IS PLACED, TRANSMITTING THERMAL ENERGY FROM SAID SOURCE ONTO THE WORKPIECE ON SAID SUPPORT IN A MANNER SO THAT THE PROJECTED ENERGY FROM SAID FILAMENTARY SOURCE ONTO SAID WORKPIECE SHALL CONFORM IN SIZE AS WELL AS SHAPE TO THE PERIPHERY OF SAID AREA AND ORIENTING THE WORKPIECE TO SUCH A POSITION WITH RESPECT TO THE SOURCE THAT THE ENERGY IMAGE OF SAID FILAMENTARY SOURCE REGISTERS WITH THE PERIPHERY OF THE WORKPIECE.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |