Inventor
Frank E. Aspen
Inventor
St. Paul, MN, US
Overview
Patents· 9 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 transducer32%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests18%
G03HHolographic processes or apparatus14%
Y10TTechnical subjects covered by former us classification9%
B82YSpecific uses or applications of nanostructures5%
G02BOptical elements, systems or apparatus5%
G03GElectrography5%
G11CStatic stores5%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation5%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution5%
PatentTitleYear
7,427,466'Anti-reflection optical data storage disk master'20087,034,971'Fabrication of sandwiched construction media'20066,850,345'Sandwich holographic disk construction with thin molded substrates'20056,839,177'Anti-reflective coating for holographic data storage media'20056,611,365'Thermoplastic substrates for holographic data storage media'20036,301,200'Magneto-optical data storage disc with highly conductive, smooth reflector layer'20016,228,482'Magneto-optic recording medium with reduced demagnetizing field threshold'20014,940,495'Photovoltaic device having light transmitting electrically conductive stacked films'19904,369,242'Non-porous and porous Al.sub.2 O.sub.3 barrier zones in layered electrophotographic device'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1990Patents assigned to MINNESOTA MINING & MFG (2)· patent assignee history
1983–2008Based in St. Paul, MN, US· patent location history
2001–2008Patents assigned to IMATION CORP (7)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| IMATION CORP | 7 | 2001–2008 |
| MINNESOTA MINING & MFG | 2 | 1983–1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| St. Paul, Minnesota, US | 9 | 1983–2008 |