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Inventor

John M. Gerpheide

Inventor
Silver Spring, MD, US

Overview

2→
Patents
1996–1998
Patent span
Electricity
Primary field (CPC H)

Patents· 2 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%
H04LTransmission of digital information, e.g. telegraphic communication40%
H03MCoding20%
PatentTitleYear
5,781,130'M-ary (d,k) runlength limited coding for multi-level data'19985,537,382'Partial response coding for a multi-level optical recording channel'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–1998Patents assigned to OPTEX CORP (2)· patent assignee history
1996Patents assigned to AT & T CORP (1)· patent assignee history
1996–1998Based in Silver Spring, MD, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OPTEX CORP21996–1998
AT & T CORP11996
Locations
LocationPatentsSpan
Silver Spring, Maryland, US21996–1998