LexDanaLexDanabeta
Inventor

Ralph F. Rogers

Inventor
Woodbury, MN, US

Overview

4→
Patents
1994–2009
Patent span
Human necessities
Primary field (CPC A)

Patents· 4 as inventor

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

A61Cprimary
A61CDentistry38%
B05CApparatus for applying fluent materials to surfaces, in general25%
A61KPreparations for medical, dental or toiletry purposes13%
A61MDevices for introducing media into, or onto, the body13%
F16DCouplings for transmitting rotation13%
PatentTitleYear
7,493,992'Gearbox brake for mining machinery'20095,848,894'Delivery system for non-aqueous paste dental materials'19985,722,829'Cartridge dispensing system for dental material'19985,295,827'Syringe tip forming apparatus'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–1998Patents assigned to MINNESOTA MINING & MFG (3)· patent assignee history
1994–1998Based in Woodbury, MN, US· patent location history
2009Patents assigned to PT TECH INC (1)· patent assignee history
2009Based in Sharon Center, OH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MINNESOTA MINING & MFG31994–1998
PT TECH INC12009
Locations
LocationPatentsSpan
Woodbury, Minnesota, US31994–1998
Sharon Center, OH, US12009