Growing community of inventors

Cedar Falls, IA, United States of America

John P Oltman

Average Co-Inventor Count = 3.00

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 147

John P OltmanRichard D Purchase (2 patents)John P OltmanDouglas F Wolff (1 patent)John P OltmanWade A Maple (1 patent)John P OltmanDavid Allen Trower (1 patent)John P OltmanEmerson V Purkapile (1 patent)John P OltmanFrank Bescher (1 patent)John P OltmanSteven Kohagen (1 patent)John P OltmanSteven J Kreger (1 patent)John P OltmanDonald N Sulentic (1 patent)John P OltmanJohn P Oltman (4 patents)Richard D PurchaseRichard D Purchase (3 patents)Douglas F WolffDouglas F Wolff (17 patents)Wade A MapleWade A Maple (13 patents)David Allen TrowerDavid Allen Trower (8 patents)Emerson V PurkapileEmerson V Purkapile (1 patent)Frank BescherFrank Bescher (1 patent)Steven KohagenSteven Kohagen (1 patent)Steven J KregerSteven J Kreger (1 patent)Donald N SulenticDonald N Sulentic (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Waterloo Industries, Inc. (3 from 110 patents)

2. Rubbermaid, Inc. (1 from 848 patents)


4 patents:

1. D350646 - Lid for tool chest

2. 4714158 - Molded tool tray assembly

3. 4570392 - Storehouse construction

4. 4239195 - Workbench

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idiyas.com
as of
1/3/2026
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