DS

Dudley W. C. Spencer

DE Denco: 37 patents #1 of 12Top 9%
EA E.I. Du Pont De Nemours And: 6 patents #1,240 of 8,010Top 20%
📍 Wilmington, DE: #38 of 3,182 inventorsTop 2%
🗺 Delaware: #78 of 7,163 inventorsTop 2%
Overall (All Time): #52,839 of 4,157,543Top 2%
51
Patents All Time

Issued Patents All Time

Showing 1–25 of 51 patents

Patent #TitleCo-InventorsDate
9950469 Device for welding plastic tubes Ivars V. Ivansons 2018-04-24
9205612 Device for welding plastic tubes Ivars V. Ivansons 2015-12-08
8708019 Device for welding plastic tubes Ivars V. Ivansons 2014-04-29
8066269 Clamp locking mechanism in device for welding plastic tubes Ivars V. Ivansons 2011-11-29
7731914 Ozone infection control device Ivars V. Ivansons 2010-06-08
7398813 Device for welding plastic tubes Ivars V. Ivansons, Gregory M. Bak 2008-07-15
6852231 Spin-hemodialysis assembly and method Ivars V. Ivansons 2005-02-08
6814719 Female urinary system Theresa M. Preston, Ivars V. Ivansons 2004-11-09
6716181 Female urinary device Ivars V. Ivansons, Theresa M. Preston 2004-04-06
6637489 Wafer for use in the selective connecting and disconnecting of plastic tubes 2003-10-28
6348049 Surgical/medical tubing and containers for use in conveying medical solutions and the like 2002-02-19
6132833 Wafer for use in selective connecting and disconnecting of plastic tubes 2000-10-17
6071690 Ionomeric modified poly-ether-ester plastic container for cryogenic fluids 2000-06-06
5928216 Surgical/medical tubing and containers for use in conveying medical solutions and the like 1999-07-27
5919173 Medical tubing and containers for use in conveying medical solutions and the like 1999-07-06
5871612 Wafer for use in selective connecting and disconnecting of plastic tubes 1999-02-16
5855731 Sterile containment welding device for plastic tubes 1999-01-05
5733268 Medical tubing and containers for use in conveying medical solutions and the like 1998-03-31
5674333 Total containment welding of plastic tubes 1997-10-07
5525186 Wafer for use in the selective connecting and disconnecting of plastic tubes Ivars V. Ivansons, Valdis Ivansons 1996-06-11
5496291 Ionomeric modified poly-ether-ester plastic tube for use in conveying medical solutions and the like 1996-03-05
D357926 Wafer for the welding and/or cutting of plastic tubes Ivars V. Ivansons, Vadlis Ivansons 1995-05-02
5397425 Total containment welding of plastic tubes Ivars V. Ivansons, Valdis Ivansons 1995-03-14
D355848 Package for a wafer for the welding and/or cutting of plastic tubes Ivars V. Ivansons, Valdis Ivansons 1995-02-28
5342345 Solution bag with plastic connecting tube 1994-08-30