Patent US3274301A successfully refreshed from Google Patents.
US3274301A
Expired / Lapsed
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Spin casting paraboloidal surfaces
Assignee: General Electric Co
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Filing: 1962-10-01
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Granted: 1966-09-20
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Expires: 1982-10-01
Abstract
No abstract record available.
Inventors
- 👤 Jr John F Kulp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:32
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/04; B29C41/042; B29C41/045; B29C41/003; B29C41/34; B29C41/50; B29K; B29K2063/00; B29K2105/00; B29K2105/06; B29K2105/16; B29L; B29L2011/00; B29L2011/0058; B29L2025/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD FOR PRODUCING A CAST PARABOLOIDAL SURFACE COMPRISING: DEPOSITING A LIQUID RESIN FORMULATION IN AN OPEN TOPPED CONTAINER; SAID RESIN FORMULATION INCLUDING A VOLATILE HARDENER; MAINTAINING ABOVE THE SURFACE OF SID RESIN FORMULATION AN ATMOSPHERE RICH IN SAID HARDENER; AND ROTATING SAID CONTAINER AT A SUBSTANTIALLY CONSTANT SPEED ABOUT A VERTICAL AXIS WHILE SAID RESN FORMULATION IS PERMITED TO CURE
Claim 2
Independent Claim
61 words
A METHOD FOR PRODUCING A CAST PARABOLOIDAL SURFACE COMPRISING: DEPOSITING A LIQUID RESIN FORMULATION IN AN OPEN TOPPED CONTAINER; SAID RESIN FORMULATION INCLUDING A VOLATILE HARDENER; MAINTAINING ABOVE THE SURFACE OF SID RESIN FORMULATION AN ATMOSPHERE RICH IN SAID HARDENER; AND ROTATING SAID CONTAINER AT A SUBSTANTIALLY CONSTANT SPEED ABOUT A VERTICAL AXIS WHILE SAID RESN FORMULATION IS PERMITED TO CURE
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |