Inventor
Robert G. Frey
Inventor
White Bear Lake, MN, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps33%
C04BLime, magnesia22%
G02BOptical elements, systems or apparatus22%
A61CDentistry11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
PatentTitleYear
5,778,123'Alignment assembly for multifiber or single fiber optical cable connector'19985,631,986'Optical fiber ferrule'19975,231,062'Transparent aluminum oxynitride-based ceramic article'19935,096,862'Transparent ceramic composite article comprising aluminum oxide and aluminum magnesium oxynitride'19924,459,513'High pressure sodium vapor lamp having resistance heater means'19844,442,379'High pressure sodium vapor lamp having resistance heater means'19844,442,378'High pressure sodium vapor lamp having resistance heater means'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984Patents assigned to GEN ELECTRIC (3)· patent assignee history
1984Based in Strongsville, OH, US· patent location history
1992–1998Patents assigned to MINNESOTA MINING & MFG (4)· patent assignee history
1992–1998Based in White Bear Lake, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 4 | 1992–1998 |
| GEN ELECTRIC | 3 | 1984 |
Locations
| Location | Patents | Span |
|---|---|---|
| White Bear Lake, Minnesota, US | 4 | 1992–1998 |
| Strongsville, OH, US | 3 | 1984 |