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Wilhelm E. Walles — 23 Patents

EAE.I. Du Pont De Nemours And: 17 patents #489 of 12,129Top 5%
Midland, MI: #161 of 2,814 inventorsTop 6%
Michigan: #3,302 of 86,293 inventorsTop 4%
Overall (All Time): #178,160 of 4,157,543Top 5%
23 Patents All Time
Wilhelm E. Walles has been granted 23 US patents. The first was granted in 1980 and the most recent in November 2002. Wilhelm E. Walles ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list Wilhelm E. Walles in Midland, MI, US.

Patents per Year

Patents granted per year, 1980 to 2002Bar chart with a peak of 4 patents in 1988.peak 41980: 1 patents19801981: 1 patents1984: 2 patents19841985: 1 patents1986: 2 patents19861987: 1 patents1988: 4 patents19881990: 3 patents1991: 1 patents19911992: 1 patents1993: 2 patents19931994: 1 patents1995: 1 patents19951998: 1 patents2002: 1 patents2002

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6485683 Headquarter vehicles for chemical biological nuclear defense — 2002-11-26
5849818 Skin sulfonated particles in matrices Luis C. Mulford 1998-12-15
5478540 Removal of mercury heavy metal values employing sulfur trioxide Luis C. Mulford 1995-12-26
5334615 Oil with bactericidal and virucidal properties — 1994-08-02
5261764 In situ conversion of a single walled tank to a double walled tank — 1993-11-16
5233081 Method for sulfonation using porous absorber material — 1993-08-03
5082740 Plastic clad metal laminate for heat transfer partitions Felix Achille, Terry H. Fiero, Steve Gregory, Timothy O. Kirch, Bradley D. Stevens 1992-01-21 $5,120,000
5030399 Method of in-mold sulfonation of molded plastic article — 1991-07-09 $16,920,000
4923753 Controlled-release compositions for acids Donald L. Tomkinson 1990-05-08 $7,802,000
4915912 Apparatus for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins Donald L. Tomkinson 1990-04-10 $4,807,000
4902493 Process for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins David R. Near, Donald L. Tomkinson 1990-02-20 $6,975,000
4775587 Treatment of the interior surfaces of resinous enclosure members — 1988-10-04 $11,664,000
4756844 Controlled-release composition having a membrane comprising submicron particles Donald L. Tomkinson 1988-07-12 $7,900,000
4745015 Thermal insulating panel Chin Huan Cheng 1988-05-17 $6,276,000
4741401 Method for treating subterranean formations Trevor Williamson, Donald L. Tomkinson 1988-05-03 $5,343,000
4647498 Open-cell composition and method of making same — 1987-03-03 $4,896,000
4615914 Treatment of the interior surfaces of resinous enclosure members — 1986-10-07 $9,298,000
4613524 Open-cell composition and method of making same — 1986-09-23 $2,981,000
4533484 Pigments for toiletries William H. Keskey, Richard G. Young 1985-08-06 $3,188,000
4462865 Delignification of lignocellulosic materials with 2-imidazolidinones and 2-oxazolidinones — 1984-07-31 $3,573,000
4457977 Metallized plastic articles — 1984-07-03 $4,966,000
4260225 Energy saving radiant insulative device — 1981-04-07 $4,497,000
4220739 Method for sulfonating organic materials — 1980-09-02 $6,411,000

Frequent Collaborators

Donald L. Tomkinson5 shared
Luis C. Mulford2 shared
Chin Huan Cheng1 shared
Felix Achille1 shared
David R. Near1 shared
Bradley D. Stevens1 shared

Nearby-Ranked Inventors

Ravigopal Vennelakanti23
Amit Kaistha23
Stéphane BOUTINON23
Feras Hantash23
Philip Verhaelen23
Florian Paul Christian Binder23
Jean-Luc Bouthemy23
Egbert Lenderink23
Tony J. Branham23