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Willard E. Kemp — 38 Patents

KDKemp Development: 15 patents #1 of 1Top 100%
FIFike: 6 patents #8 of 83Top 10%
AIAcf Industries Incorporated: 1 patents #87 of 178Top 50%
UNUnknown: 1 patents #29,356 of 83,584Top 40%
Houston, TX: #360 of 21,073 inventorsTop 2%
Texas: #2,724 of 125,132 inventorsTop 3%
Overall (All Time): #84,675 of 4,157,543Top 3%
38 Patents All Time
Willard E. Kemp has been granted 38 US patents while listed as an inventor at Kemp Development. The first was granted in 1980 and the most recent in August 2004. Willard E. Kemp ranks #84,675 of 4,157,543 US inventors in our database (top 2.0%). Patent records list Willard E. Kemp in Houston, TX, US.

Issued Patents All Time

Showing 1–25 of 38 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6773521 Apparatus and process for treating a particulate material within a rotating retort — 2004-08-10
6427711 Inline check valve — 2002-08-06
6425570 Ball valve having retractable sealing member — 2002-07-30
6379610 Apparatus and process for treating a particulate material within a rotating retort — 2002-04-30
5958156 Process for treating a particulate material within a rotating retort — 1999-09-28
5766544 Process for fluidizing particulate material within a rotatable retort — 1998-06-16
5759483 Apparatus for treating a particulate material within a rotating retort — 1998-06-02
5435337 Inline control valve for controlling fluid flow — 1995-07-25
5407498 Mechanically fluidized retort and method for treating particles therein — 1995-04-18
5399207 Process for surface hardening of refractory metal workpieces — 1995-03-21
5378331 Apparatus and method for electropolishing metal workpieces — 1995-01-03
5324009 Apparatus for surface hardening of refractory metal workpieces — 1994-06-28
5316594 Process for surface hardening of refractory metal workpieces — 1994-05-31
5303904 Method and apparatus for controlling heat transfer between a container and workpieces — 1994-04-19
5170659 Apparatus and method for detecting fluid leakage — 1992-12-15
5170989 Sealing assembly for valve member — 1992-12-15
5127628 Means for rotating ball valves between open and closed positions — 1992-07-07
5000492 Flanged connection for flow line members — 1991-03-19
4940208 Ball valve — 1990-07-10
4919391 flanged connection for valves — 1990-04-24
4911196 Inline check valve — 1990-03-27
4911408 Seat assembly for ball valves — 1990-03-27
4899980 Ball valve — 1990-02-13
D296921 Gate valve — 1988-07-26
D296922 Gate valve — 1988-07-26

Nearby-Ranked Inventors

Andrew Kent Warfield38
Stephen D. Patek38
Bing Zhu38
Brian S. Hausauer38
Kimitoshi Etoh38
Pat M. White38
Joseph Gan38
Yutaka Ogasawara38
James Pyott Johnston38