Patent US2435519A successfully refreshed from Google Patents.
Patent US3233785A successfully refreshed from Google Patents.
US3233785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rinsing pipette
Assignee: Dade Reagents Inc
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Filing: 1962-09-13
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Granted: 1966-02-08
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Expires: 1982-09-13
Abstract
No abstract record available.
Inventors
- 👤 Burke Robert Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:46
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A RINSING PIPETTE COMPRISING A TRANSPARENT TUBE HAVING AN UPPER RINSING SECTION AND A LOWER SAMPLE-RECEIVING SECTION, SAID LOWER SAMPLE-RECEIVING SECTION HAVING A TAPERED LOWER END AND HAVING A NARROW BORE CAPILLARY PASSAGE OF UNIFORM CROSS SECTION EXTENDING THERETHROUGH, SAID CAPILLARY PASSAGE BEING OF A PREDETERMINED VOLUMETRIC CAPACITY WITHIN THE RANGE OF .001 TO 0.1 MILLILITER AND BEING FILLABLE UNDER FORCES OF CAPILLARY ATTRACTION WHEN SAID TAPERED END IS INSERTED INTO A BODY OF LIQUID TO BE SAMPLED, SAID UPPER RINSING SECTION HAVING AN ENLARGED CHAMBER OF SUBSTANTIALLY GREATER DIAMETER AND VOLUME THAN SAID CAPILLARY PASSAGE AND COMMUNICATION WITH SAID PASSAGE, SAID CHAMBER AND PASSAGE MEETING ALONG A LINE DEFINING THE AUTOMATIC LIMIT LINE FOR THE INTAKE OF LIQUID INTO SAID PASSAGE BY CAPILLARY ATTRACTION, WHEREBY, SAID PASSAGE MAY BE COMPLETELY FILLED WITH A LIQUID SAMPLE OF PREDETERMINED VOLUME SIMPLY BY INSERTING THE LOWER END OF SAID PIPETTE INTO A BODY OF LIQUID, AND A COLLAPSIBLE BULB MOUNTED AT THE UPPER END OF SAID TUBE AND COMMUNICATING WITH SAID CHAMBER, SAID BULB HAVING AN OPENING IN THE WALL THEREOF AND BEING ADAPTED TO BE SQUEEZED AND RELEASED FOR RINSING SAID CAPILLARY PASSAGE WITH A SAMPLE-DILUTING SOLUTION AND FOR THOROUGHLY MIXING A SAMPLE WITH SAID SOLUTION.
Claim 2
Dependent Claim
205 words
A RINSING PIPETTE COMPRISING A TRANSPARENT TUBE HAVING AN UPPER RINSING SECTION AND A LOWER SAMPLE-RECEIVING SECTION, SAID LOWER SAMPLE-RECEIVING SECTION HAVING A TAPERED LOWER END AND HAVING A NARROW BORE CAPILLARY PASSAGE OF UNIFORM CROSS SECTION EXTENDING THERETHROUGH, SAID CAPILLARY PASSAGE BEING OF A PREDETERMINED VOLUMETRIC CAPACITY WITHIN THE RANGE OF .001 TO 0.1 MILLILITER AND BEING FILLABLE UNDER FORCES OF CAPILLARY ATTRACTION WHEN SAID TAPERED END IS INSERTED INTO A BODY OF LIQUID TO BE SAMPLED, SAID UPPER RINSING SECTION HAVING AN ENLARGED CHAMBER OF SUBSTANTIALLY GREATER DIAMETER AND VOLUME THAN SAID CAPILLARY PASSAGE AND COMMUNICATION WITH SAID PASSAGE, SAID CHAMBER AND PASSAGE MEETING ALONG A LINE DEFINING THE AUTOMATIC LIMIT LINE FOR THE INTAKE OF LIQUID INTO SAID PASSAGE BY CAPILLARY ATTRACTION, WHEREBY, SAID PASSAGE MAY BE COMPLETELY FILLED WITH A LIQUID SAMPLE OF PREDETERMINED VOLUME SIMPLY BY INSERTING THE LOWER END OF SAID PIPETTE INTO A BODY OF LIQUID, AND A COLLAPSIBLE BULB MOUNTED AT THE UPPER END OF SAID TUBE AND COMMUNICATING WITH SAID CHAMBER, SAID BULB HAVING AN OPENING IN THE WALL THEREOF AND BEING ADAPTED TO BE SQUEEZED AND RELEASED FOR RINSING SAID CAPILLARY PASSAGE WITH A SAMPLE-DILUTING SOLUTION AND FOR THOROUGHLY MIXING A SAMPLE WITH SAID SOLUTION.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |