Patent Assignment Details
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For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 011213/0055 | |
| Pages: | 10 |
| | Recorded: | 10/27/2000 | | |
| Conveyance: | SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). |
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Total properties:
4
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Patent #:
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Issue Dt:
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02/09/1999
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Application #:
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08736033
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Filing Dt:
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10/23/1996
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Title:
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FLEXIBLE PLUNGER APPARATUS FOR FREE MOVEMENT IN GAS-PRODUCING WELLS
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Patent #:
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Issue Dt:
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11/16/1999
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Application #:
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09082458
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Filing Dt:
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05/20/1998
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Title:
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PLUNGER ARRIVAL TARGET TIME ADJUSTMENT METHOD USING BOTH A AND B VALVE OPEN TIMES
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Patent #:
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Issue Dt:
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03/07/2000
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Application #:
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09120494
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Filing Dt:
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07/21/1998
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Title:
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GAS FLOW PROPORTIONING AND CONTROLLING VALVE SYSTEM
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Patent #:
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Issue Dt:
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03/06/2001
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Application #:
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09290040
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Filing Dt:
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04/12/1999
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Title:
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CASING DIFFERENTIAL PRESSURE BASED CONTROL METHOD FOR GAS-PRODUCING WELLS
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Assignee
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| 601 SECOND AVENUE SOUTH |
| MINNEAPOLIS, MINNESOTA 55402 |
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Correspondence name and address
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DORSEY & WHITNEY LLP
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DEVAN V. PADMANABHAN
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220 SOUTH SIXTH STREET
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MINNEAPOLIS, MN 55402
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