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Inventor

Joseph G. Mandell

Inventor
Maplewood, MN, US

Overview

5→
Patents
1982–1999
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 5 as inventor

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

E04Bprimary
E04BGeneral building constructions25%
E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates25%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers17%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general8%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof8%
G10KSound-producing devices8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
5,974,757'Privacy enclosure'19995,813,180'Privacy enclosure'19985,658,656'Use of materials comprising microbubbles as acoustical barriers'19975,504,281'Perforated acoustical attenuators'19964,319,623'Window structure including a sheet of polymeric film'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1998Patents assigned to MINNESOTA MINING & MFG (4)· patent assignee history
1982Based in St. Paul, MN, US· patent location history
1996–1999Based in Maplewood, MN, US· patent location history
1999Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MINNESOTA MINING & MFG41982–1998
3M INNOVATIVE PROPERTIES CO11999
Locations
LocationPatentsSpan
Maplewood, Minnesota, US41996–1999
St. Paul, Minnesota, US11982