LexDanaLexDanabeta
Inventor

Ioan R. Allen

Inventor
San Francisco, CA, US

Overview

7→
Patents
1986–2003
Patent span
Physics
Primary field (CPC G)

Patents· 7 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 transducer40%
H04SStereophonic systems40%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them10%
G06KGraphical data reading10%
PatentTitleYear
6,624,873'Matrix-encoded surround-sound channels in a discrete digital sound format'20036,011,610'Compatible digital soundtracks for 70 mm motion picture film'20004,941,177'Variable matrix decoder'19904,815,068'Audio encoder for use with more than one decoder each having different characteristics'19894,799,260'Variable matrix decoder'19894,577,302'Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise'19864,577,305'Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–2003Patents assigned to DOLBY LAB LICENSING CORP (6)· patent assignee history
1986Based in Tiburon, CA, US· patent location history
1989Patents assigned to ALLEN IOAN R (1)· patent assignee history
1989Patents assigned to DOLBY RAY MILTON (1)· patent assignee history
1989Patents assigned to PAUKER RANDOLPH G (1)· patent assignee history
1989–2003Based in San Francisco, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DOLBY LAB LICENSING CORP61986–2003
ALLEN IOAN Rself11989
DOLBY RAY MILTON11989
PAUKER RANDOLPH G11989
Locations
LocationPatentsSpan
San Francisco, California, US51989–2003
Tiburon, California, US21986