LexDanaLexDanabeta
Inventor

James B. Renfroe, Jr.

Inventor
Valencia, CA, US

Overview

6→
Patents
1986–2009
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 6 as inventor

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

E21Bprimary
E21BEarth or rock drilling71%
A61KPreparations for medical, dental or toiletry purposes14%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations14%
PatentTitleYear
7,473,429'Method for treatment of laminitis in animals'2009RE033614'Apparatus and method for enhanced oil recovery'19914,834,176'Well valve'19894,646,828'Apparatus for enhanced oil recovery'19874,632,184'Submersible pump safety systems'19864,624,310'Well apparatus'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1989Patents assigned to OTIS ENG CO (4)· patent assignee history
1986–1991Based in Valencia, CA, US· patent location history
2009Patents assigned to CARTER DANIEL W (1)· patent assignee history
2009Patents assigned to RENFROE J BEN (1)· patent assignee history
2009Based in Gulf Breeze, FL, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OTIS ENG CO41986–1989
CARTER DANIEL W12009
RENFROE J BENself12009
Locations
LocationPatentsSpan
Valencia, California, US51986–1991
Gulf Breeze, Florida, US12009