Inventor

William K. Hofman

Inventor

Ada, MI, US

Overview

12→

Patents

1988–2017

Patent span

Fixed constructions

Primary field (CPC E)

Patents· 12 as inventor

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

E04Bprimary

E04BGeneral building constructions24%

A47BTables20%

A47CChairs8%

E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates8%

F21VFunctional features or details of lighting devices or systems thereof8%

F21WIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to uses or applications of lighting devices or systems8%

F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted8%

G02BOptical elements, systems or apparatus8%

LOC144%

Y10TTechnical subjects covered by former us classification4%

PatentTitleYear

9,841,554'Panel light assembly'2017 9,188,733'Panel light assembly'2015 D0725638'Display screen mount'2015 8,104,850'Furniture storage unit'2012 6,481,163'Partition panel'2002 6,173,545'Connector for partition system'2001 6,009,676'Connector for partition system'2000 5,836,121'Connection system for connecting partition and floor channel'1998 5,378,057'Metal case'1995 5,364,178'File cabinet having a corregated inner framework construction'1994 4,906,045'Chair control for a pedestal chair having a knee-tilt seat'1990 4,744,538'Decorative cap and base cover for an office chair center post and base'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1990Patents assigned to SHAW WALKER CO (2)· patent assignee history

1988–1995Based in Coopersville, MI, US· patent location history

1994–1995Patents assigned to WESTINGHOUSE ELECTRIC CORP (2)· patent assignee history

1998–2017Patents assigned to STEELCASE INC (5)· patent assignee history

1998–2017Based in Ada, MI, US· patent location history

2012–2015Patents assigned to HOFMAN WILLIAM K (2)· patent assignee history

2012Patents assigned to BULTSMA BRIAN L (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
STEELCASE INC	5	1998–2017
HOFMAN WILLIAM Kself	2	2012–2015
SHAW WALKER CO	2	1988–1990
WESTINGHOUSE ELECTRIC CORP	2	1994–1995
BULTSMA BRIAN L	1	2012

Locations

Location	Patents	Span
Ada, MI, US	8	1998–2017
Coopersville, MI, US	4	1988–1995