US3344259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Roche Diagnostics Corp
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Filing: —
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Granted: 1967-09-26
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Expires: 1984-09-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:14
CPC Classifications
G; G06; G06M; G06M11/00; B; B43; B43K; B43K29/00; B43K29/08; C; C12; C12M; C12M41/00; C12M41/30; C12M41/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
COUNTING APPARATUS FOR COUNTING BACTERIAL COLONIES DISPOSED IN A DISH, COMPRISING, TRANSPARENT DISH SUPPORT MEANS, A GRID SCRIBED ON SAID SUPPORT MEANS, MEANS TO EDGE LIGHT SAID SUPPORT MEANS, AN ELECTRICAL RESISTANCE MEDIUM EXTENDING OVER THE ENTIRE AREA OF SAID DISH, A FIRST ELECTRICAL TERMINAL CONNECTED TO SAID MEDIUM, A SECOND ELECTRICAL TERMINAL, AN ELECTRICALLY CONDUCTIVE MANIPULABLE PROBE ELEMENT CONNECTED TO SAID SECOND TERMINAL, A COUNTER FOR REGISTERING THE NUMBER OF COLONIES COUNTED, AND CIRCUIT MEANS CONNECTED BETWEEN SAID FIRST AND SECOND TERMINALS AND SAID COUNTER, SAID CIRCUIT MEANS INCLUDING MEANS FOR APPLYING A STEPPING SIGNAL TO SAID COUNTER IN RESPONSE TO THE CONTACT OF SAID PROBE WITH SAID ELECTRICAL RESISTANCE MEDIUM, AND MEANS FOR PREVENTING APPLICATION OF A STEPPING SIGNAL TO SAID COUNTER UNTIL AN OPEN CIRCUIT BETWEEN SAID MEDIUM AND SAID PROBE ELEMENT HAS EXISTED FOR A PREDETERMINED PERIOD OF TIME.
Claim 2
Dependent Claim
143 words
COUNTING APPARATUS FOR COUNTING BACTERIAL COLONIES DISPOSED IN A DISH, COMPRISING, TRANSPARENT DISH SUPPORT MEANS, A GRID SCRIBED ON SAID SUPPORT MEANS, MEANS TO EDGE LIGHT SAID SUPPORT MEANS, AN ELECTRICAL RESISTANCE MEDIUM EXTENDING OVER THE ENTIRE AREA OF SAID DISH, A FIRST ELECTRICAL TERMINAL CONNECTED TO SAID MEDIUM, A SECOND ELECTRICAL TERMINAL, AN ELECTRICALLY CONDUCTIVE MANIPULABLE PROBE ELEMENT CONNECTED TO SAID SECOND TERMINAL, A COUNTER FOR REGISTERING THE NUMBER OF COLONIES COUNTED, AND CIRCUIT MEANS CONNECTED BETWEEN SAID FIRST AND SECOND TERMINALS AND SAID COUNTER, SAID CIRCUIT MEANS INCLUDING MEANS FOR APPLYING A STEPPING SIGNAL TO SAID COUNTER IN RESPONSE TO THE CONTACT OF SAID PROBE WITH SAID ELECTRICAL RESISTANCE MEDIUM, AND MEANS FOR PREVENTING APPLICATION OF A STEPPING SIGNAL TO SAID COUNTER UNTIL AN OPEN CIRCUIT BETWEEN SAID MEDIUM AND SAID PROBE ELEMENT HAS EXISTED FOR A PREDETERMINED PERIOD OF TIME.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |