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Inventor

Charles H. Black

Inventor
Des Plaines, IL, US

Overview

3→
Patents
1981–1989
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A63Fprimary
A63FCard, board, or roulette games29%
G06KGraphical data reading29%
G06VImage or video recognition or understanding14%
G07CTime or attendance registers14%
G07DHandling of coins or valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing14%
PatentTitleYear
4,835,624'High-speed magnetic encoding apparatus and method'19894,760,247'Optical card reader utilizing area image processing'19884,267,916'Coin identification system'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to KEENE CORP (1)· patent assignee history
1981Based in Chicago, IL, US· patent location history
1988Patents assigned to BALLY MANUFACTURING COMPANY (1)· patent assignee history
1988–1989Based in Des Plaines, IL, US· patent location history
1989Patents assigned to SCIENT GAMES OF CALIFORNIA INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BALLY MANUFACTURING COMPANY11988
KEENE CORP11981
SCIENT GAMES OF CALIFORNIA INC11989
Locations
LocationPatentsSpan
Des Plaines, Illinois, US21988–1989
Chicago, Illinois, US11981