US5032343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing medical micro pipette tips for difficult to reach places
Assignee: SORENSEN BIOSCIENCE Inc
•
Filing: 1987-05-11
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Granted: 1991-07-16
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Expires: 2007-05-11
Abstract
Abstract Low cost medical micro pipette tips for difficult to reach places, and related methods. The leading or distal portion of the micro pipette tips are materially elongated and ultra thin. This accommodates placement of the distal influent port, for receiving expensive biological extracts, in hard to reach places.
Inventors
- 👤 David H. Jeffs
- 👤 Paul M. Jessop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:43
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/02; B01L3/0275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A method of forming a synthetic resinous micro pipette tip to create a flat duckbill distal end thereon for access to liquid contained in hard to reach places comprising applying heat and pressure to a substantial length of a rounded exterior of a distal end portion of an existing micro pipette tip while preventing occlusion of an internal passageway in the micro pipette tip to thereby redistribute the synthetic resinous material at said distal end portion to create a flat duckbill section of substantial length having a bore, a minor transverse dimension substantially less than an initial transverse size of the distal end portion and a major transverse dimension substantially more than the initial transverse size of the distal end portion.
Claim 2
Independent Claim
121 words
A method of forming a synthetic resinous micro pipette tip to create a flat duckbill distal end thereon for access to liquid contained in hard to reach places comprising applying heat and pressure to a substantial length of a rounded exterior of a distal end portion of an existing micro pipette tip while preventing occlusion of an internal passageway in the micro pipette tip to thereby redistribute the synthetic resinous material at said distal end portion to create a flat duckbill section of substantial length having a bore, a minor transverse dimension substantially less than an initial transverse size of the distal end portion and a major transverse dimension substantially more than the initial transverse size of the distal end portion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |