Inventor

John E. Sparks

Inventor

Lubbock, TX, US

Overview

1976–2021

Patent span

Textiles

Primary field (CPC D)

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

D01Bprimary

D01BMechanical treatment of natural fibrous or filamentary material to obtain fibres of filaments, e.g. for spinning36%

B01DSeparation9%

B30BPresses in general9%

G06FElectric digital data processing9%

H04BTransmission9%

H04LTransmission of digital information, e.g. telegraphic communication9%

H04NPictorial communication, e.g. television9%

Y10TTechnical subjects covered by former us classification9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to COLORADO VIDEO (1)· patent assignee history

1976Based in Boulder, CO, US· patent location history

1980–1981Patents assigned to HORN AND GLADDEN LINT CLEANER (3)· patent assignee history

1980–1987Based in Lubbock, TX, US· patent location history

1983–1985Patents assigned to HORN & GLADDEN LINT CLEANER CO (2)· patent assignee history

1987Patents assigned to HORN JAMES L (1)· patent assignee history

2021Patents assigned to SERVICENOW INC (1)· patent assignee history

2021Based in San Diego, CA, US· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HORN AND GLADDEN LINT CLEANER	3	1980–1981
HORN & GLADDEN LINT CLEANER CO	2	1983–1985
COLORADO VIDEO	1	1976
HORN JAMES L	1	1987
SERVICENOW INC	1	2021

Locations