US3261668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical analyzer tape
Assignee: Scientific Industries Inc
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Filing: 1962-08-14
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Granted: 1966-07-19
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Expires: 1982-08-14
Abstract
No abstract record available.
Inventors
- 👤 Natelson Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:42
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/00009; B; B01; B01L; B01L7/00; F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1284; F04B43/1292; G01N21/00; G01N21/84; G01N21/8483; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4905; G01N33/50; G01N33/52; G01N33/525; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/110833; Y10T436/14; Y10T436/142222; Y10T436/143333; Y10T436/144444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN ARRANGEMENT FOR CHEMICAL ANALYSIS, COMPRISING IN COMBINATION, THREE FLAT STRIP MEDIUMS, SUPERIMPOSED ONE ON THE OTHER, THE OUTER MEDIUM ON THE ONE SIDE BEING ABSORBENT AND DESIGNED TO RECEIVE A SAMPLE, THE INTERMEDIATE MEDIUM BEING NON-REACTIVE AND POROUS OF A PORE SIZE SUCH THAT IT IS PERMEABLE TO WATER BUT MOLECLEUS OF A MOLECULAR WEIGHT HIGHER THAN PROTEINS CANNOT PASS THERETHROUGH, THE OUTER MEDIUM ON THE OTHER SIDE BEING A TEST
Claim 2
Dependent Claim
72 words
AN ARRANGEMENT FOR CHEMICAL ANALYSIS, COMPRISING IN COMBINATION, THREE FLAT STRIP MEDIUMS, SUPERIMPOSED ONE ON THE OTHER, THE OUTER MEDIUM ON THE ONE SIDE BEING ABSORBENT AND DESIGNED TO RECEIVE A SAMPLE, THE INTERMEDIATE MEDIUM BEING NON-REACTIVE AND POROUS OF A PORE SIZE SUCH THAT IT IS PERMEABLE TO WATER BUT MOLECLEUS OF A MOLECULAR WEIGHT HIGHER THAN PROTEINS CANNOT PASS THERETHROUGH, THE OUTER MEDIUM ON THE OTHER SIDE BEING A TEST
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |