Inventor
Ramon F. Hegel
Inventor
North St. Paul, MN, US
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer29%
G03HHolographic processes or apparatus19%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds10%
Y10TTechnical subjects covered by former us classification10%
G02BOptical elements, systems or apparatus6%
B24DTools for grinding, buffing or sharpening3%
C10MLubricating compositions3%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions3%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices3%
PatentTitleYear
7,455,889'Holographic media fabrication techniques'20087,247,397'Thermally stable perfluoropolyether lubricant for recording media'20077,034,971'Fabrication of sandwiched construction media'20066,864,019'Recording material formulations for holographic media'20056,850,345'Sandwich holographic disk construction with thin molded substrates'20056,671,073'Environmentally protected holographic device construction'20036,611,365'Thermoplastic substrates for holographic data storage media'20035,089,924'Tape cassette with wear pad comprising polyolefin sheet and polyamide adhesive layer'19924,785,064'Ultra-violet light curable compositions for abrasion resistant articles'19884,773,920'Coated abrasive suitable for use as a lapping material'19884,663,184'Radiation curable phosphorate ester compounds'19874,652,498'Environmentally protected optical recording media'19874,650,845'Ultra-violet light curable compositions for abrasion resistant articles'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1992Patents assigned to MINNESOTA MINING & MFG (6)· patent assignee history
1987–1992Based in St. Paul, MN, US· patent location history
2003–2008Patents assigned to IMATION CORP (7)· patent assignee history
2003–2008Based in North St. Paul, MN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IMATION CORP | 7 | 2003–2008 |
| MINNESOTA MINING & MFG | 6 | 1987–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| North St. Paul, Minnesota, US | 7 | 2003–2008 |
| St. Paul, Minnesota, US | 6 | 1987–1992 |