Inventor

David A. Horsma

Inventor

Palo Alto, CA, US

Overview

23→

Patents

1977–1995

Patent span

Electricity

Primary field (CPC H)

Patents· 23 as inventor

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

H01Cprimary

H01CResistors25%

H05BElectric heating20%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines8%

B29CShaping or joining of plastics7%

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. inserts7%

H01BCables5%

C08LCompositions of macromolecular compounds3%

F16LPipes3%

Y10TTechnical subjects covered by former us classification3%

PatentTitleYear

5,430,815'Optical fiber water sensor'1995 5,396,575'Sealed optical fiber closures'1995 5,166,658'Electrical device comprising conductive polymers'1992 5,148,005'Composite circuit protection devices'1992 5,089,688'Composite circuit protection devices'1992 5,064,997'Composite circuit protection devices'1991 4,967,176'Assemblies of PTC circuit protection devices'1990 4,658,121'Self regulating heating device employing positive temperature coefficient of resistance compositions'1987 4,654,511'Layered self-regulating heating article'1987 4,560,498'Positive temperature coefficient of resistance compositions'1985 4,543,474'Layered self-regulating heating article'1985 4,421,582'Self-heating article with deformable electrodes'1983 4,419,156'Method of encapsulation'1983 4,388,607'Conductive polymer compositions, and to devices comprising such compositions'1983 4,330,703'Layered self-regulating heating article'1982 4,314,145'Electrical devices containing PTC elements'1982 4,246,468'Electrical devices containing PTC elements'1981 4,236,949'Process for preparing a hermetically sealed assembly'1980 4,209,352'Methods for sealing closure members to substrates'1980 4,177,376'Layered self-regulating heating article'1979 4,095,044'Multiple cable adapter and splice case including the same'1978 4,085,286'Heat-recoverable sealing article with self-contained heating means and method of sealing a splice therewith'1978 4,017,715'Temperature overshoot heater'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1995Patents assigned to RAYCHEM CORP (22)· patent assignee history

1977–1995Based in Palo Alto, CA, US· patent location history

1995Patents assigned to RAYNET CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RAYCHEM CORP	22	1977–1995
RAYNET CORP	1	1995

Locations

Location	Patents	Span
Palo Alto, California, US	23	1977–1995