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Inventor

Stephen J. Simpson

Inventor
Grand Rapids, MI, US

Overview

10→
Patents
1992–2020
Patent span
Human necessities
Primary field (CPC A)

Patents· 10 as inventor

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

A47Cprimary
A47CChairs33%
LOC0625%
A47LDomestic washing or cleaning17%
B01FMixing, e.g. dissolving, emulsifying or dispersing8%
E04BGeneral building constructions8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
D0883690Chair2020D0883691Chair2020D0883689Chair202010,383,448Forward tilt assembly for chair seat20198,272,693'Tension mechanism for a weight-responsive chair'20127,055,911'Mesh chair'20066,533,355'Height-adjustment mechanism for a chair'20035,896,617'Water extraction cleaning machine with nesting tank assembly'19995,867,861'Upright water extraction cleaning machine with two suction nozzles'19995,150,554'Panel-post arrangement'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2020Patents assigned to HAWORTH INC (8)· patent assignee history
1992–1999Based in Holland, MI, US· patent location history
1999Patents assigned to BISSELL INC (1)· patent assignee history
2003–2020Based in Grand Rapids, MI, US· patent location history
2012Patents assigned to DESANTA SIMON (1)· patent assignee history
2012Patents assigned to HALL JASON (1)· patent assignee history
2012Patents assigned to SIMPSON STEPHEN J (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HAWORTH INC81992–2020
BISSELL INC11999
DESANTA SIMON12012
HALL JASON12012
SIMPSON STEPHEN Jself12012
Locations
LocationPatentsSpan
Grand Rapids, MI, US72003–2020
Holland, MI, US31992–1999