Inventor

H. Clark Bell

Inventor

Chatsworth, CA, US

Overview

5→

Patents

1977–2002

Patent span

Electricity

Primary field (CPC H)

Patents· 5 as inventor

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

Y10Sprimary

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests23%

H01PWaveguides15%

A61BDiagnosis8%

A61FFilters implantable into blood vessels8%

B29CShaping or joining of plastics8%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts8%

B29LIndexing scheme associated with subclass b29c, relating to particular articles8%

H01QAntennas, i.e. radio aerials8%

H03HImpedance networks, e.g. resonant circuits8%

H04JMultiplex communication8%

PatentTitleYear

6,342,867'Nested turnstile antenna'2002 5,932,522'Superconducting radio-frequency bandstop filter'1999 5,843,871'Electromagnetic filter having a transmission line disposed in a cover of the filter housing'1998 4,529,396'Apparatus for forming a rolled tubular fabric article'1985 4,029,902'Contiguous channel multiplexer'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to HUGHES AIRCRAFT CO (1)· patent assignee history

1977Based in Sepulveda, CA, US· patent location history

1985Patents assigned to HYDRO MED PRODUCTS INC (1)· patent assignee history

1985Based in Dallas, TX, US· patent location history

1998–1999Patents assigned to ILLINOIS SUPERCONDUCTOR CORP (2)· patent assignee history

1998–2002Based in Chatsworth, CA, US· patent location history

2002Patents assigned to NAVCOM TECH INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ILLINOIS SUPERCONDUCTOR CORP	2	1998–1999
HUGHES AIRCRAFT CO	1	1977
HYDRO MED PRODUCTS INC	1	1985
NAVCOM TECH INC	1	2002

Locations

Location	Patents	Span
Chatsworth, California, US	3	1998–2002
Dallas, Texas, US	1	1985
Sepulveda, California, US	1	1977