US3222133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining surface neutralizability of solid materials
Assignee: Gulf Research and Development Co
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Filing: 1961-11-28
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Granted: 1965-12-07
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Expires: 1981-11-28
Abstract
No abstract record available.
Inventors
- 👤 Edward V Ballou
- 👤 Ralph T Barth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:02
CPC Classifications
B; B01; B01J; B01J35/00; G; G01; G01N; G01N30/00; G01N7/00; Y; Y10; Y10T; Y10T436/00; Y10T436/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A METHOD FOR DETERMINING THE SURFACE NEUTRALIZABILITY OF A SOLID MATERIAL, COMPRISING CONTACTING A MEASURED SAMPLE OF THE SOLID MATERIAL IN A CLOSED SYSTEM WITH A MEASURED AMOUNT OF A NEUTRALIZING AGENT THAT IS GASEOUS AT THE CONDITIONS OF SAID CONTACTING AND THAT IS EFFECTIVE TO NEUTRALIZE THE NEUTRALIZABLE SITES ON THE SURFACE OF SAID SOLID MATERIAL, SO AS TO EFFECT CHEMISORPTION OF SAID NEUTRALIZING AGENT BY SAID SAMPLE, SAID NEUTRALIZING AGENT BEING EMPLOYED IN EXCESS OF THE AMOUNT REQUIRED TO COMPLETELY NEUTRALIZE THE NEUTRALIZABLE SITES AT THE LOWEST TEMPERATURE AT WHICH SURFACE NEUTRALIZABILITY IS TO BE DETERMINED, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE ABOVE THE CONDENSATION TEMPERATURE OF SAID NEUTRALIZING AGENT, SUBJECTING THE SAMPLE IN SAID CLOSED SYSTEM TO A PLURALITY OF TEMPERATURES AT WHICH SURFACE NEUTRALIZABILITY IS TO BE DETERMINED AND MEASURING THE GAS PRESSURE OF THE SYSTEM AT EQUILIBRIUM AT EACH SUCH TEMPERATURE, THE GAS PRESSURE SO MEASURED BEING INDICATIVE OF THE AMOUNT OF NEUTRALIZING AGENT THAT IS NOT CHEMISORBED BY THE SAMPLE AT THE CONDITIONS OF THE SYSTEM, THIS AMOUNT IN TURN BEING INDICATIVE OF THE AMOUNT OF NEUTRALIZING AGENT CHEMISORBED BY THE SAMPLE AT THE SAME CONDITIONS, THE AMOUNT SO CHEMISORBED BEING INDICATIVE OF THE SURFACE NEUTRALIZABILITY OF THE SOLID MATERIAL AT THESE CONDITIONS.
Claim 2
Independent Claim
211 words
A METHOD FOR DETERMINING THE SURFACE NEUTRALIZABILITY OF A SOLID MATERIAL, COMPRISING CONTACTING A MEASURED SAMPLE OF THE SOLID MATERIAL IN A CLOSED SYSTEM WITH A MEASURED AMOUNT OF A NEUTRALIZING AGENT THAT IS GASEOUS AT THE CONDITIONS OF SAID CONTACTING AND THAT IS EFFECTIVE TO NEUTRALIZE THE NEUTRALIZABLE SITES ON THE SURFACE OF SAID SOLID MATERIAL, SO AS TO EFFECT CHEMISORPTION OF SAID NEUTRALIZING AGENT BY SAID SAMPLE, SAID NEUTRALIZING AGENT BEING EMPLOYED IN EXCESS OF THE AMOUNT REQUIRED TO COMPLETELY NEUTRALIZE THE NEUTRALIZABLE SITES AT THE LOWEST TEMPERATURE AT WHICH SURFACE NEUTRALIZABILITY IS TO BE DETERMINED, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE ABOVE THE CONDENSATION TEMPERATURE OF SAID NEUTRALIZING AGENT, SUBJECTING THE SAMPLE IN SAID CLOSED SYSTEM TO A PLURALITY OF TEMPERATURES AT WHICH SURFACE NEUTRALIZABILITY IS TO BE DETERMINED AND MEASURING THE GAS PRESSURE OF THE SYSTEM AT EQUILIBRIUM AT EACH SUCH TEMPERATURE, THE GAS PRESSURE SO MEASURED BEING INDICATIVE OF THE AMOUNT OF NEUTRALIZING AGENT THAT IS NOT CHEMISORBED BY THE SAMPLE AT THE CONDITIONS OF THE SYSTEM, THIS AMOUNT IN TURN BEING INDICATIVE OF THE AMOUNT OF NEUTRALIZING AGENT CHEMISORBED BY THE SAMPLE AT THE SAME CONDITIONS, THE AMOUNT SO CHEMISORBED BEING INDICATIVE OF THE SURFACE NEUTRALIZABILITY OF THE SOLID MATERIAL AT THESE CONDITIONS.
References Cited (Backward Citations)
US2788657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |