Inventor

John D. Verhoeven

Inventor

Ames, IA, US

Overview

1977–1998

Patent span

Chemistry

Primary field (CPC C)

Patents· 18 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C22Cprimary

C22CAlloys21%

Y10TTechnical subjects covered by former us classification15%

H10NElectric solid-state devices not otherwise provided for13%

C30BSingle-crystal growth10%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

B22FWorking metallic powder5%

C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys5%

C23CCoating metallic material5%

B21JForging3%

C21DModifying the physical structure of ferrous metals3%

PatentTitleYear

5,714,117'Air melting of Cu-Cr alloys'1998 5,252,147'Modification of surface properties of copper-refractory metal alloys'1993 5,200,004'High strength, light weight Ti-Y composites and method of making same'1993 5,185,044'Method of making \"Damascus\" blades'1993 5,062,025'Electrolytic capacitor and large surface area electrode element therefor'1991 5,043,025'High strength-high conductivity Cu--Fe composites produced by powder compaction/mechanical reduction'1991 5,039,943'Magnetostrictive magnetometer'1991 4,849,034'Thermal treatment for increasing magnetostrictive response of rare earth-iron alloy rods'1989 4,832,738'Molybdenum-copper and tungsten-copper alloys and method of making'1989 4,818,304'Method of increasing magnetostrictive response of rare earth-iron alloy rods'1989 4,770,704'Continuous method for manufacturing grain-oriented magnetostrictive bodies'1988 4,770,718'Method of preparing copper-dendritic composite alloys for mechanical reduction'1988 4,640,816'Metastable alloy materials produced by solid state reaction of compacted, mechanically deformed mixtures'1987 4,600,448'Copper-tantalum alloy'1986 4,532,703'Method of preparing composite superconducting wire'1985 4,481,030'Tantalum-copper alloy and method for making'1984 4,378,330'Ductile alloy and process for preparing composite superconducting wire'1983 4,030,963'Arc-melting preparation of single crystal LaB.sub.6 cathodes'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1986Patents assigned to US ENERGY (5)· patent assignee history

1977–1998Based in Ames, IA, US· patent location history

1987Patents assigned to CALIFORNIA INST OF TECHN (1)· patent assignee history

1988–1998Patents assigned to UNIV IOWA STATE RES FOUND INC (10)· patent assignee history

1991Patents assigned to UNIV IOWA STATE RES FOUND (1)· patent assignee history

1993Patents assigned to PENDRAY ALFRED H (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV IOWA STATE RES FOUND INC	10	1988–1998
US ENERGY	5	1977–1986
CALIFORNIA INST OF TECHN	1	1987
PENDRAY ALFRED H	1	1993
UNIV IOWA STATE RES FOUND	1	1991

Locations

Location	Patents	Span
Ames, IA, US	18	1977–1998