Inventor
Tzuo-Chang Lee
Inventor
Bloomington, MN, US
Overview
Patents· 20 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 transducer33%
G03GElectrography17%
G03HHolographic processes or apparatus10%
G11CStatic stores10%
G06EOptical computing devices7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
G01SRadio direction-finding3%
G02BOptical elements, systems or apparatus3%
G08BSignalling systems, e.g. personal calling systems3%
H03HImpedance networks, e.g. resonant circuits3%
PatentTitleYear
8,023,369'Storage system and optical pick-up unit'20117,969,832'Optical tape drive systems'20117,153,366'Systems and method for forming a servo pattern on a magnetic tape'20067,029,726'Method for forming a servo pattern on a magnetic tape'20066,940,676'Triple push-pull optical tracking system'20056,853,652'Spatial filtering of laser ghosts'20055,914,925'DRDW differential phase tracking method and apparatus'19995,586,100'Transversal filter and method for cancelling intersymbol interference'19965,241,524'Method of edge recording on optical record medium'19934,358,519'Technique of introducing an interface layer in a thermoplastic photoconductor medium'19824,339,176'Holographic space-variant system for evaluating the ambiguity integral'19824,310,894'High speed ambiguity function evaluation by optical processing'19824,282,295'Element for thermoplastic recording'19814,282,294'Polyvinyl blocking layer for preventing charge injection in a thermoplastic photoconductive device for holography'19814,252,400'Nondestructive dynamic controller for thermoplastic development'19814,230,950'Electro-optic smoke detector'1980RE030166'Heterodyne readout holographic memory'19794,131,462'Element for thermoplastic recording'19784,045,115'Optics for multi-track holographic tape recorder'19773,976,354'Holographic memory with moving memory medium'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1982Patents assigned to HONEYWELL INC (10)· patent assignee history
1976–1982Based in Bloomington, MN, US· patent location history
1993Based in Sunnyvale, CA, US· patent location history
1996Patents assigned to LITERAL CORP (1)· patent assignee history
1996Based in Colorado Springs, CO, US· patent location history
1999Patents assigned to EASTMAN KODAK CO (1)· patent assignee history
1999Based in Webster, NY, US· patent location history
2005–2006Patents assigned to QUANTUM CORP (4)· patent assignee history
2005–2011Based in Shrewsbury, MA, US· patent location history
2011Patents assigned to ORACLE AMERICA INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HONEYWELL INC | 10 | 1976–1982 |
| QUANTUM CORP | 4 | 2005–2006 |
| ORACLE AMERICA INC | 2 | 2011 |
| EASTMAN KODAK CO | 1 | 1999 |
| LITERAL CORP | 1 | 1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Bloomington, Minnesota, US | 11 | 1976–1982 |
| Shrewsbury, Massachusetts, US | 6 | 2005–2011 |
| Webster, New York, US | 1 | 1999 |
| Colorado Springs, CO, US | 1 | 1996 |
| Sunnyvale, California, US | 1 | 1993 |