Inventor

David L. Walker

Inventor

Chester, PA, US

Overview

108→

Patents

1985–2020

Patent span

LOC

Primary field

Patents· 108 as inventor

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

LOC06primary

LOC0656%

LOC238%

H04NPictorial communication, e.g. television7%

LOC075%

B22FWorking metallic powder3%

C23CCoating metallic material3%

LOC213%

A01GHorticulture2%

A01NPreservation of bodies of humans or animals or plants or parts thereof2%

C07DHeterocyclic compounds2%

PatentTitleYear

10,865,468Methods of forming an oxide layer on a metal body2020 9,404,173'Methods of preparing a surface of a cast zirconium alloy substrate for oxidation'2016 D0714571'Shower caddy'2014 D0693209'Pair of shower rod end caps'2013 D0681423'Pair of shower rod end caps'2013 D0672178'Wall-mountable towel bar'2012 D0666012'End cap for a support rod'2012 8,124,187'Methods of forming porous coatings on substrates'2012 D0652231'Cabinet'2012 D0652230'Cabinet'2012 D0652236'Spacesaver bottom assembly'2012 D0652233'Cabinet'2012 D0652232'Cabinet'2012 D0648151'Cabinet'2011 D0648152'Cabinet'2011 D0641191'Shower caddy'2011 7,883,662'Metal injection molding methods and feedstocks'2011 D0609952'Concave wood framed swing door medicine cabinet'2010 D0609951'Oval swing door medicine cabinet'2010 D0609953'Concave mirrored swing door medicine cabinet'2010 D0594674'Two door fabritec vanity'2009 D0589129'One door fabritec vanity'2009 D0573387'Pole caddy'2008 D0569149'Shower caddy'2008 D0568427'Golf club head'2008 D0560924'Combination shower curtain hook and picture frame'2008 D0560262'Golf club head'2008 D0553876'Cabinet'2007 D0553877'Cabinet'2007 D0547100'Tri-view wall cabinet'2007 D0547101'Wall cabinet'2007 D0545386'Iron golf club head'2007 D0544276'Wall cabinet'2007 D0543762'Tanktopper cabinet'2007 D0522269'Cabinet with dispenser'2006 D0513143'Cabinet'2005 D0512865'Cabinet'2005 D0509392'Wall cabinet'2005 D0508793'Storage cabinet'2005 D0504265'Wall cabinet'2005 D0501616'Pantry cabinet'2005 D0501100'Floor cabinet'2005 D0500929'Appliance cabinet'2005 D0500415'Spacesaver cabinet'2005 D0499796'Cabinet with dispenser'2004 D0496188'Hutch'2004 D0496187'Floor cabinet'2004 D0495899'Spacesaver cabinet'2004 D0495898'Utility cabinet'2004 D0495527'Cart cabinet'2004 6,778,961'Method and system for delivering text-to-speech in a real time telephony environment'2004 D0493305'Shelf cabinet'2004 D0488641'Cabinet'2004 D0488636'Spacesaver cabinet'2004 D0488329'Cabinet'2004 D0486338'Wall cabinet'2004 D0486339'Wall cabinet with shelves'2004 D0486024'Wall cabinet with shelves'2004 D0486023'Wall cabinet'2004 D0485721'Wall cabinet'2004 D0484344'Wall cabinet'2003 D0479058'Vanity cabinet'2003 D0475865'Spacesaver cabinet'2003 D0473411'Wire caddy'2003 D0473085'Wire tub caddy'2003 D0472747'Wire corner caddy'2003 D0472749'Wire ledge caddy'2003 D0472748'Wire wall caddy'2003 D0463637'Hamper'2002 D0460290'Spacesaver cabinet'2002 D0459617'Cabinet'2002 D0459618'Cabinet'2002 D0456638'Spacesaver shelving'2002 D0456177'Magazine rack'2002 D0453652'Shelf unit'2002 D0450947'Towel rack'2001 D0444017'Corner shelf unit'2001 D0442394'Magazine rack'2001 D0440722'Hamper'2001 D0438042'Wire tote'2001 D0436780'Medicine cabinet'2001 D0436777'Towel stand'2001 D0436461'Drawer stand'2001 D0436487'Wallshelf'2001 D0436279'Medicine cabinet'2001 D0435326'Wastebasket'2000 D0433582'Spacesaver cabinet'2000 D0431406'Cabinet'2000 D0428739'Cabinet'2000 D0428558'Closet cabinet'2000 6,087,789'Hybrid bridge magnetic deflection amplifier'2000 D0426992'Paper towel holder'2000 D0426981'Spacesaver cabinet'2000 D0426736'Cabinet'2000 D0417991'Shower caddy'1999 D0415916'Shower caddy'1999 D0409424'Shower caddy'1999 5,692,339'Method for producing raisins'1997 5,666,156'System and method to improve the quality of reproduced images on a film to video transfer device'1997 5,557,883'Trellising system for producing dried-on-the-vine raisins'1996 5,545,655'Substituted oxathiolanes'1996 5,179,314'Non-sequential raster scanning apparatus and method'1993 5,150,957'Real time registration weave correction system'1992 5,039,332'Substituted oxathiolanes'1991 4,987,481'Video noise reduction system'1991 4,712,237'Method and apparatus for unscrambling sync-suppressed television signals'1987 4,703,354'Non-linear sync signal processing circuit'1987 4,554,581'STV Decoder with improved data signal recognition capability'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2000Based in Glendora, CA, US· patent location history

1992–2016Patents assigned to WALKER DAVID L (6)· patent assignee history

1999–2014Patents assigned to ZENITH PROD CORP (88)· patent assignee history

1999–2014Based in Chester, PA, US· patent location history

2007–2008Based in Lake Forest, CA, US· patent location history

2011–2012Based in Camas, WA, US· patent location history

2012Patents assigned to WALKER DAVID (5)· patent assignee history

2012Patents assigned to BARNETT NINA (4)· patent assignee history

2012Patents assigned to DIDEHVAR KEVIN (4)· patent assignee history

2016–2020Based in Portland, OR, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ZENITH PROD CORP	88	1999–2014
WALKER DAVID Lself	6	1992–2016
WALKER DAVIDself	5	2012
BARNETT NINA	4	2012
DIDEHVAR KEVIN	4	2012

Locations

Location	Patents	Span
Chester, Pennsylvania, US	88	1999–2014
Glendora, California, US	5	1991–2000
Lake Forest, California, US	3	2007–2008
Portland, OR, US	2	2016–2020
Camas, Washington, US	2	2011–2012