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Francis H. Walker
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Mill Valley, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Hydraulic machine arrangement
Patent number
8,176,838
Issue date
May 15, 2012
Frank H. Walker
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Hydraulic machine arrangement
Patent number
8,162,621
Issue date
Apr 24, 2012
Frank H. Walker
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Hydraulic regenerative braking system for a vehicle
Patent number
8,132,868
Issue date
Mar 13, 2012
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Hydraulic regenerative braking system for a vehicle
Patent number
7,562,944
Issue date
Jul 21, 2009
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Reversible variable displacement hydraulic pump and motor
Patent number
6,537,047
Issue date
Mar 25, 2003
Frank H. Walker
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Grant
Herbicidal compounds
Patent number
6,291,400
Issue date
Sep 18, 2001
Zeneca Limited
John E D Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Modular engine having crankshaft segments connected by a spring to...
Patent number
6,138,635
Issue date
Oct 31, 2000
Frank H. Walker
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Vehicle drive system featuring split engine and accessory back drive
Patent number
5,971,092
Issue date
Oct 26, 1999
Walker; Frank H.
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Herbicidal compounds
Patent number
5,958,839
Issue date
Sep 28, 1999
Zeneca Litmited
John E. D. Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Herbicidal compounds
Patent number
5,744,610
Issue date
Apr 28, 1998
Zeneca Limited
John E. D. Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Herbicidal compounds
Patent number
5,563,115
Issue date
Oct 8, 1996
Zeneca Limited
John E. D. Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Herbicidal compounds
Patent number
5,426,091
Issue date
Jun 20, 1995
Zeneca Limited
John E. D. Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Hydraulic regenerative braking and four wheel drive system
Patent number
5,323,688
Issue date
Jun 28, 1994
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Certain alkylidine aminooxyamide compounds useful as herbicides
Patent number
5,314,865
Issue date
May 24, 1994
ICI Americas Inc.
Francis H. Walker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Hydraulic regenerative braking and four wheel drive system
Patent number
5,263,401
Issue date
Nov 23, 1993
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Herbicidal compounds
Patent number
5,250,501
Issue date
Oct 5, 1993
Imperial Chemical Industries PLC
John E. D. Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Fungicidal N-pyridyl imides
Patent number
5,157,043
Issue date
Oct 20, 1992
Imperial Chemical Industries PLC
Don R. Baker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Hydraulic wheel motor and pump
Patent number
5,101,925
Issue date
Apr 7, 1992
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Pyrazole compounds and herbicidal use thereof
Patent number
5,098,464
Issue date
Mar 24, 1992
Imperial Chemical Industries PLC
John E. D. Barton
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Alkylidine aminooxyamide compounds useful in controlling undesirabl...
Patent number
5,002,605
Issue date
Mar 26, 1991
ICI Americas Inc.
Francis H. Walker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Hydraulic wheel motor and pump
Patent number
5,000,282
Issue date
Mar 19, 1991
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Fungicidal pyridyl sulfenyl carbamates
Patent number
4,931,451
Issue date
Jun 5, 1990
ICI Americas Inc.
Don R. Baker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Emergency vehicle braking system and method for using same
Patent number
4,896,749
Issue date
Jan 30, 1990
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Hydraulic wheel motor and pump
Patent number
4,883,141
Issue date
Nov 28, 1989
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Fungicidal pyridyl sulfenyl carbamates
Patent number
4,800,205
Issue date
Jan 24, 1989
Don R. Baker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
S-benzyl thiolcarbamates and their use in controlling weeds in rice...
Patent number
4,695,314
Issue date
Sep 22, 1987
Stauffer Chemical Company
Lawrence L. Buren
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Grant
.alpha.-halo-.OMEGA.-haloalkylamides herbicidal antidotes
Patent number
4,650,516
Issue date
Mar 17, 1987
Stauffer Chemical Co.
Francis H. Walker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Haloalkylcarbonylamino-1,3-dioxane herbicide antidotes
Patent number
4,561,876
Issue date
Dec 31, 1985
Stauffer Chemical Co.
Francis H. Walker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Herbicides: N,N-dialkyl-2-(4-substituted-1-naphthoxy) propionamides
Patent number
4,548,641
Issue date
Oct 22, 1985
Stauffer Chemical Company
Francis H. Walker
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Haloacetylaminomethyl dioxolane herbicide antidotes
Patent number
4,512,796
Issue date
Apr 23, 1985
Stauffer Chemical Company
Francis H. Walker
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Patents Applications
last 30 patents
Information
Patent Application
HYDRAULIC MACHINE ARRANGEMENT
Publication number
20100101406
Publication date
Apr 29, 2010
Frank H. Walker
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
Hydraulic Regenerative Braking System For A Vehicle
Publication number
20090236906
Publication date
Sep 24, 2009
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Application
Hydraulic Machine Arrangement
Publication number
20090223359
Publication date
Sep 10, 2009
Frank H. Walker
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
Hydraulic Regenerative Braking System For a Vehicle
Publication number
20080210500
Publication date
Sep 4, 2008
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Application
Hydraulic Regenerative Braking System For A Vehicle
Publication number
20080185909
Publication date
Aug 7, 2008
Frank H. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Application
Hydraulic regenerative braking system for a vehicle
Publication number
20060055238
Publication date
Mar 16, 2006
Frank H Walker
B60 - VEHICLES IN GENERAL
Information
Patent Application
Reversible variable displacement hydraulic pump and motor
Publication number
20010036411
Publication date
Nov 1, 2001
Frank H. Walker
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...