US3386853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral vacuum deposition apparatus and method
Assignee: Individual
•
Filing: 1965-12-28
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Granted: 1968-06-04
•
Expires: 1985-12-28
Abstract
No abstract record available.
Inventors
- 👤 Paul E Oberg
- 👤 Maynard C Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:57
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/243; C23C14/246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF VACUUM DEPOSITING MATERIAL UPON A SUBSTRATE FREE OF LARGER PARTICLES COMPRISING THE STEPS OF: (A) SUBJECTING AN ENCLOSED CURVED RESISTANCE HEATING ELEMENT HAVING A PLURALITY OF CONVOLUTIONS ON A DIMINISHING RADIUS AND CONTAINING A MATERIAL TO BE EVAPORATED TO A SOURCE OF ENERGY IN ORDER TO RAISE THE TEMPERATURE OF SAID MATERIAL TO ITS EVAPORATING TEMPERATURE WHEREBY SAID MATERIAL IS DIRECTED ALONG THE HEATING ELEMENT ENCLOSURE IN A TORTUOUS PATH BY IMPINGING UPON SAID ELEMENT AND BEING RE-EVAPORATED THEREFROM AS THE EVAPORANT PROCEEDS TOWARD AN EXIT.
Claim 2
Independent Claim
89 words
A METHOD OF VACUUM DEPOSITING MATERIAL UPON A SUBSTRATE FREE OF LARGER PARTICLES COMPRISING THE STEPS OF: (A) SUBJECTING AN ENCLOSED CURVED RESISTANCE HEATING ELEMENT HAVING A PLURALITY OF CONVOLUTIONS ON A DIMINISHING RADIUS AND CONTAINING A MATERIAL TO BE EVAPORATED TO A SOURCE OF ENERGY IN ORDER TO RAISE THE TEMPERATURE OF SAID MATERIAL TO ITS EVAPORATING TEMPERATURE WHEREBY SAID MATERIAL IS DIRECTED ALONG THE HEATING ELEMENT ENCLOSURE IN A TORTUOUS PATH BY IMPINGING UPON SAID ELEMENT AND BEING RE-EVAPORATED THEREFROM AS THE EVAPORANT PROCEEDS TOWARD AN EXIT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |