US3230364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface area measurements
Assignee: Individual
•
Filing: 1963-04-11
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Granted: 1966-01-18
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Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 John T Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:51
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; G01N15/088; G01N15/0893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF ASCERTAINING THE NUMBER OF MOLECULES OF A GAS REQUIRED TO FORM A MONOMOLECULAR FILM OF A GAS ON THE SURFACE OF A SOLID COMPRISING PLACING A SOLID IN A CLOSED CHAMBER, INTRODUCING SEQUENTIALLY INTO THE CHAMBER IN AT LEAST TWO INCREMENTS A GAMMA RAY EMITTING GAS WHICH GAS IS INERT WITH RESPECT TO AND ADSORBABLE ON THE SURFACE OF THE SOLID, ALLOWING THE GAS CONTAINED IN EACH INCREMENTAL INTRODUCTION TO REACH THE POINT OF ADSORPTION EQUILIBRIUM WITH THE SURFACE OF THE SOLID WHILE MAINTAINING THE TEMPERATURE OF SAID SOLID AND GAS ADSORBED ON THE SURFACE OF SAID SOLID AT A TEMPERATURE SUCH THAT THE
Claim 2
Independent Claim
107 words
A METHOD OF ASCERTAINING THE NUMBER OF MOLECULES OF A GAS REQUIRED TO FORM A MONOMOLECULAR FILM OF A GAS ON THE SURFACE OF A SOLID COMPRISING PLACING A SOLID IN A CLOSED CHAMBER, INTRODUCING SEQUENTIALLY INTO THE CHAMBER IN AT LEAST TWO INCREMENTS A GAMMA RAY EMITTING GAS WHICH GAS IS INERT WITH RESPECT TO AND ADSORBABLE ON THE SURFACE OF THE SOLID, ALLOWING THE GAS CONTAINED IN EACH INCREMENTAL INTRODUCTION TO REACH THE POINT OF ADSORPTION EQUILIBRIUM WITH THE SURFACE OF THE SOLID WHILE MAINTAINING THE TEMPERATURE OF SAID SOLID AND GAS ADSORBED ON THE SURFACE OF SAID SOLID AT A TEMPERATURE SUCH THAT THE
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |