Patent Assignment Details
NOTE:Results display only for issued patents and published applications.
For pending or abandoned applications please consult USPTO staff.
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| Reel/Frame: | 015541/0123 | |
| Pages: | 10 |
| | Recorded: | 01/10/2005 | | |
| Conveyance: | FIRST AMENDMENT TO PATENT, TRADEMARK AND COPYRIGHT SECURITY AGREEMENT |
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Total properties:
7
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Patent #:
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Issue Dt:
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02/11/1992
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Application #:
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07736521
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Filing Dt:
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07/26/1991
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Title:
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FLUME DISTRIBUTION SYSTEM WITH REMOVABLE BLOCK
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Patent #:
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Issue Dt:
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11/03/1992
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Application #:
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07841046
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Filing Dt:
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02/25/1992
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Title:
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AIR DUCT BLOCK FOR AIR/WATER UNDERDRAIN SYSTEMS IN GRAVITY FILTERS
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Patent #:
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Issue Dt:
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07/12/1994
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Application #:
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07889176
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Filing Dt:
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05/27/1992
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Title:
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MULTI-LATERAL FILTER UNDERDRAIN BLOCK
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Patent #:
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Issue Dt:
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02/06/1996
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Application #:
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08226811
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Filing Dt:
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04/12/1994
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Title:
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APPARATUS AND METHOD FOR IMPROVING GAS BACKWASH IN LATERAL UNDERDRAINS
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Patent #:
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Issue Dt:
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06/17/1997
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Application #:
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08596548
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Filing Dt:
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02/05/1996
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Title:
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APPARATUS AND METHOD FOR IMPROVING GAS BACKWASH IN LATERAL UNDERDRAINS
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Patent #:
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Issue Dt:
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11/06/2001
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Application #:
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09015390
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Filing Dt:
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01/29/1998
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Title:
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APPARATUS FOR DISTRIBUTING GAS AND LIQUID DURING CONCURRENT GAS/LIQUID BACKWASH IN FILTER UNDERDRAIN FLUMES
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Patent #:
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Issue Dt:
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10/23/2001
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Application #:
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09627929
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Filing Dt:
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07/28/2000
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Title:
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Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes
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Assignee
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| 20 STANWIX STREET |
| PITTSBURGH, PENNSYLVANIA 15222 |
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Correspondence name and address
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MICHAEL L. DEVER
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301 GRANT STREET
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20TH FLOOR
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PITTSBURGH, PA 15219
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