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Inventor

David J. Ritch

Inventor
Malibu, CA, US

Overview

22→
Patents
1999–2013
Patent span
LOC
Primary field

Patents· 22 as inventor

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

LOC06primary
LOC0652%
A47CChairs20%
A47BTables12%
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons4%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
8,596,593'Worksurface leg mount system'20137,874,620'Health care chair'2011D0580687'Table leg'2008D0575968'Table leg'20087,325,873'Seating unit'2008D0548475'Seating unit'2007D0546085'Seating unit'2007D0535838'Seating unit'2007D0530104'Work space divider'20066,766,748'Table with support leg having an elongated channel'20046,764,144'Storage unit'2004D0467445'Chair'2002D0460630'Privacy screen'20026,286,901'Chair'20016,142,566'Chair'2000D0423261'Chair'20006,030,037'Horizontally nestable chair'2000D0417793'Chair'19995,934,758'Membrane chair'1999D0412416'Base'1999D0411928'Chair'1999D0407576'Chair'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2000Patents assigned to HAWORTH INC (4)· patent assignee history
1999–2008Patents assigned to STEELCASE INC (4)· patent assignee history
1999–2007Based in Malibu, CA, US· patent location history
2002–2011Patents assigned to MILLER HERMAN INC (5)· patent assignee history
2002–2007Patents assigned to STEELCASE DEV CORP (4)· patent assignee history
2008–2013Patents assigned to KRUEGER INT INC (3)· patent assignee history
2008–2013Based in Venice, CA, US· patent location history
2008Based in Marina Del Ray, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MILLER HERMAN INC52002–2011
HAWORTH INC41999–2000
STEELCASE DEV CORP42002–2007
STEELCASE INC41999–2008
KRUEGER INT INC32008–2013
Locations
LocationPatentsSpan
Malibu, California, US171999–2007
Venice, California, US32008–2013
Marina Del Ray, California, US22008