US3306764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a refractory metal or carbide coating on refractory materials and article
Assignee: NUCLEAR TECHNICAL SERVICE Corp
•
Filing: 1959-08-19
•
Granted: 1967-02-28
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Expires: 1979-08-19
Abstract
No abstract record available.
Inventors
- 👤 John G Lewis
- 👤 Harold A Ohlgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:34
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/4505; C04B41/4515; C04B41/80; C04B41/81; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/54; C23C14/541; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF COATING A BASE REFRACTORY MATERIAL WHICH COMPRISES HEATING SAID MATERIAL TO AN ELEVATED TEMPERATURE IN A SUBSTANTIALLY CLOSED VACUUM CHAMBER WITH A METAL WHICH HAS A VAPOR PRESSURE OF LESS THAN ABOUT TEN MICRONS OF MERCURY AT ABOUT 2000*F., REDUCING THE PRESSURE IN SAID CHAMBER TO A PRESSURE LESS THAN TEN MICRONS OF MERCURY, CONTINUING SAID HEATING AT A SUFFICIENTLY HIGH TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO PROVIDE FOR A BUILDUP OF PRESSURE OF METAL VAPOR IN SAID CHAMBER TO SUBSTANTIALLY SATURATION CONDITIONS AT SAID HIGH TEMPERATURE TO THEREBY PROVIDE FOR CONDENSATION OF SAID METAL ON SAID MATERIAL.
Claim 2
Independent Claim
103 words
THE METHOD OF COATING A BASE REFRACTORY MATERIAL WHICH COMPRISES HEATING SAID MATERIAL TO AN ELEVATED TEMPERATURE IN A SUBSTANTIALLY CLOSED VACUUM CHAMBER WITH A METAL WHICH HAS A VAPOR PRESSURE OF LESS THAN ABOUT TEN MICRONS OF MERCURY AT ABOUT 2000*F., REDUCING THE PRESSURE IN SAID CHAMBER TO A PRESSURE LESS THAN TEN MICRONS OF MERCURY, CONTINUING SAID HEATING AT A SUFFICIENTLY HIGH TEMPERATURE FOR A PERIOD OF TIME SUFFICIENT TO PROVIDE FOR A BUILDUP OF PRESSURE OF METAL VAPOR IN SAID CHAMBER TO SUBSTANTIALLY SATURATION CONDITIONS AT SAID HIGH TEMPERATURE TO THEREBY PROVIDE FOR CONDENSATION OF SAID METAL ON SAID MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |