US3281265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling coating thickness by electron beam evaporation
Assignee: United States Steel Corp
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Filing: 1963-09-17
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Granted: 1966-10-25
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Expires: 1983-09-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas K Cauley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:15
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/083; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/28; C23C14/30; C23C14/54; C23C14/542; C23C14/545; C23C14/56; C23C14/562; G01N23/16; H; H01; H01J; H01J37/00; H01J37/30; H01J37/304; H01J37/32; H01J37/34; H10; H10P; H10P14/00; H10P14/60; H10P14/63; H10P14/6302; H10P14/6304; H10P14/6306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A VOPOR-DEPOSITION PROCESS FOR APPLYING A COATING TO THE SURFACE OF A STRIP IN WHICH THE STRIP PASSES OVER A SUPPLY OF THE COATING MATERIAL HOUSED IN A VACUUM CHAMBER, AN ELECTRON BEAM IS DIRECTED AGAINST THE SURFACE OF THE SUPPLY AND HEATS THE COATING MATERIAL TO A TEMPERATURE SUFFICIENT TO VAPORIZE IT, AND THE VAPORS CONDENSE ON THE STRIP SURFACE, THE WIDTH OF SAID SUPPLY AND OF SAID BEAM BEING APPROXIMATELY EQUAL TO THE STRIP WIDTH, THE COMBINATION THEREWITH OF A METHOD OF CONTROLLING THE COATING THICKNESS COMPRISING INTERPOSING ELECTROSTATIC POTENTIALS BETWEEN THE SOURCE OF SAID BEAM AND THE SURFACE OF THE SUPPLY OF COATING MATERIAL TO MODIFY THE HEATING EFFECT OF SAID BEAM, AND INDIVIDUALLY VARYING THE DEGREE TO WHICH THE HEATING EFFECT IS MODIFIED IN DIFFERENT PORTIONS OF SAID BEAM ACROSS ITS WIDTH, THEREBY VARYING THE QUANTITY OF MATERIAL VAPORIZED AT DIFFERENT PORTIONS OF SAID SUPPLY.
Claim 2
Dependent Claim
150 words
IN A VOPOR-DEPOSITION PROCESS FOR APPLYING A COATING TO THE SURFACE OF A STRIP IN WHICH THE STRIP PASSES OVER A SUPPLY OF THE COATING MATERIAL HOUSED IN A VACUUM CHAMBER, AN ELECTRON BEAM IS DIRECTED AGAINST THE SURFACE OF THE SUPPLY AND HEATS THE COATING MATERIAL TO A TEMPERATURE SUFFICIENT TO VAPORIZE IT, AND THE VAPORS CONDENSE ON THE STRIP SURFACE, THE WIDTH OF SAID SUPPLY AND OF SAID BEAM BEING APPROXIMATELY EQUAL TO THE STRIP WIDTH, THE COMBINATION THEREWITH OF A METHOD OF CONTROLLING THE COATING THICKNESS COMPRISING INTERPOSING ELECTROSTATIC POTENTIALS BETWEEN THE SOURCE OF SAID BEAM AND THE SURFACE OF THE SUPPLY OF COATING MATERIAL TO MODIFY THE HEATING EFFECT OF SAID BEAM, AND INDIVIDUALLY VARYING THE DEGREE TO WHICH THE HEATING EFFECT IS MODIFIED IN DIFFERENT PORTIONS OF SAID BEAM ACROSS ITS WIDTH, THEREBY VARYING THE QUANTITY OF MATERIAL VAPORIZED AT DIFFERENT PORTIONS OF SAID SUPPLY.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |