US3227522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assaying apparatus
Assignee: ANKH LAB Inc
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Filing: 1961-09-19
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Granted: 1966-01-04
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Expires: 1981-09-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Alvin B Salisbury
- 👤 Guy A Baker
- 👤 Clifford I Olt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN APPARATUS FOR ASSAYING THE EFFECT OF A FIRST AGENT ON A SECOND AGENT UPON DIFFUSION OF THE FIRST AGENT INTO AN AGAR-LIKE MEDIUM HAVING A GENERALLLY FLAT EXPOSED SURFACE IMPREGNATED WITH THE SECOND AGENT, A SUPPORTING BODY AND AN ELONGATED PROJECTION EXTENDING OUTWARDLY FROM SAID BODY AND PROVIDING AN OUTWARDLY FACING CONTINUOUS END SURFACE TO RECEIVE A LAYER OF SAID FIRST AGENT FOR DIFFUSION INTO SAID MEDIUM AND REACTION WITH SAID SECOND AGENT, SAID END SURFACE OF SAID PROJECTION BEING FORMED OF NON-ABSORBENT MATERIAL AND HAVING A CONVEXCONTOUR TO ENGAGE SAID MEDIUM SURFACE FIRST AT A CENTRAL PORTION OF THE END AND THEN PROGRESSIVELY TO THE PERIPHERAL PORTION OF THE END SURFACE TO AVOID THE TRAPPING OF AIR BETWEEN THE PROJECTION AND THE MEDIUM SURFACE AND TO INSURE UNIFORM DISTRIBUTION OF THE FIRST AGENT THROUGHOUT THE AREA COVERED BY THE END SURFACE OF THE PROJECTION.
Claim 2
Dependent Claim
146 words
IN APPARATUS FOR ASSAYING THE EFFECT OF A FIRST AGENT ON A SECOND AGENT UPON DIFFUSION OF THE FIRST AGENT INTO AN AGAR-LIKE MEDIUM HAVING A GENERALLLY FLAT EXPOSED SURFACE IMPREGNATED WITH THE SECOND AGENT, A SUPPORTING BODY AND AN ELONGATED PROJECTION EXTENDING OUTWARDLY FROM SAID BODY AND PROVIDING AN OUTWARDLY FACING CONTINUOUS END SURFACE TO RECEIVE A LAYER OF SAID FIRST AGENT FOR DIFFUSION INTO SAID MEDIUM AND REACTION WITH SAID SECOND AGENT, SAID END SURFACE OF SAID PROJECTION BEING FORMED OF NON-ABSORBENT MATERIAL AND HAVING A CONVEXCONTOUR TO ENGAGE SAID MEDIUM SURFACE FIRST AT A CENTRAL PORTION OF THE END AND THEN PROGRESSIVELY TO THE PERIPHERAL PORTION OF THE END SURFACE TO AVOID THE TRAPPING OF AIR BETWEEN THE PROJECTION AND THE MEDIUM SURFACE AND TO INSURE UNIFORM DISTRIBUTION OF THE FIRST AGENT THROUGHOUT THE AREA COVERED BY THE END SURFACE OF THE PROJECTION.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |