US3296869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for determining the specific surface of non-uniformly shaped substances
Assignee: Individual
•
Filing: 1964-11-24
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Granted: 1967-01-10
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Expires: 1984-11-24
Abstract
No abstract record available.
Inventors
- 👤 Bultemann Hans-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:48
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; G01N15/088; G01N15/0893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD FOR DETERMINING THE SPECIFIC SURFACE OF NON-UNIFORMLY SHAPED SUBSTANCES BY MEASURING THE ADSORPTION OF NOBLE GASES OR INERT GASES AT THE SPECIMEN TO BE INVESTIGATED, SAID METHOD COMPRISING, FEEDING A GAS FROM A GAS SUPPLY CONTAINER THROUGH AN INLET IN THE FORM OF A FLOW THROTTLE INTO A MEASURING VESSEL CONTAINING THE SPECIMEN, AND DURING MEASURING TIME INCREASING BUT NOT DECREASING THE GAS INFLOW RATE FROM THE SUPPLY CONTAINER TO THE MEASURING VESSEL, AND DETERMINING THE ADSORPTION ISOTHERMS WHICH ARE DEPENDENT ON THE SPECIFIC SURFACE BY GAS PRESSURE MEASUREMENT FOR OBTAINING THE SO CALLED BET LINE IN THE MEASURING VESSEL.
Claim 2
Independent Claim
102 words
A METHOD FOR DETERMINING THE SPECIFIC SURFACE OF NON-UNIFORMLY SHAPED SUBSTANCES BY MEASURING THE ADSORPTION OF NOBLE GASES OR INERT GASES AT THE SPECIMEN TO BE INVESTIGATED, SAID METHOD COMPRISING, FEEDING A GAS FROM A GAS SUPPLY CONTAINER THROUGH AN INLET IN THE FORM OF A FLOW THROTTLE INTO A MEASURING VESSEL CONTAINING THE SPECIMEN, AND DURING MEASURING TIME INCREASING BUT NOT DECREASING THE GAS INFLOW RATE FROM THE SUPPLY CONTAINER TO THE MEASURING VESSEL, AND DETERMINING THE ADSORPTION ISOTHERMS WHICH ARE DEPENDENT ON THE SPECIFIC SURFACE BY GAS PRESSURE MEASUREMENT FOR OBTAINING THE SO CALLED BET LINE IN THE MEASURING VESSEL.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |