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 26–50 of 51 patents

Patent #TitleCo-InventorsDate
5279685 Total containment device for connect/disconnect of plastic tubes Ivars V. Ivansons, Valdis Ivansons 1994-01-18
5256229 Sterile containment welding device for plastic tubes 1993-10-26
5248359 Sterile entry/exit total containment process for closed systems using plastic tubes John B. Shaposka 1993-09-28
5244522 Total containment welding of plastic tubes Valdis Ivansons, Ivars V. Ivansons 1993-09-14
5209800 Total containment welding of plastic tubes John B. Shaposka, Robert J. Beird 1993-05-11
5158630 Total containment welding or plastic tubes John B. Shaposka 1992-10-27
5156701 Total containment welding of plastic tubes John B. Shaposka 1992-10-20
5141592 Sterile entry/exit total containment process for closed systems using plastic tubes John B. Shaposka 1992-08-25
5037395 Catheter for suppressing tunnel infection 1991-08-06
4933036 Techniques for welding thermoplastic tubes John B. Shaposka 1990-06-12
4913756 Techniques for welding thermoplastic tubes John B. Shaposka 1990-04-03
4897138 Sealing of plastic tubes John B. Shaposka 1990-01-30
4864101 Hybrid welding wafer John B. Shaposka 1989-09-05
4832773 Techniques for welding thermoplastic tubes John B. Shaposka 1989-05-23
4793880 Sterile welding of plastic tubes John B. Shaposka 1988-12-27
4770735 Techniques for welding thermoplastic tubes John B. Shaposka 1988-09-13
4753697 Total-containment sterile process and system John B. Shaposka 1988-06-28
4619642 Sterile, cold cut connection process, apparatus and system 1986-10-28
4610670 Sterile connection process, apparatus and system 1986-09-09
4516971 Sterile docking process, apparatus and system 1985-05-14
4507119 Sterile docking process, apparatus and system 1985-03-26
4488961 One-way filter unit 1984-12-18
4412835 Sterile docking process, apparatus and system 1983-11-01
4369779 Sterile docking process, apparatus and system 1983-01-25
4205726 Horseshoe manufacture 1980-06-03