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Inventor

Jerome Apt, Jr.

Inventor
Pittsburgh, PA, US

Overview

5→
Patents
1982–2000
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 5 as inventor

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

E02Fprimary
E02FDredging40%
B08BCleaning in general20%
E21CMining or quarrying10%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
6,158,152'Pneumatic excavator'20005,966,847'Pneumatic excavator'19995,860,232'Mobile safe excavation system having a deflector plate and vacuum source'19995,487,229'Apparatus for pneumatic excavation'19964,323,280'Remote controlled high wall coal mining system'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Patents assigned to COALEX INC (1)· patent assignee history
1982–2000Based in Pittsburgh, PA, US· patent location history
1996Patents assigned to ELECTRIC POWER RES INST (1)· patent assignee history
1999–2000Patents assigned to CONCEPT ENGINEERING GROUP INC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CONCEPT ENGINEERING GROUP INC31999–2000
COALEX INC11982
ELECTRIC POWER RES INST11996
Locations
LocationPatentsSpan
Pittsburgh, Pennsylvania, US51982–2000