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Inventor

Richard J. Knauss

Inventor
Pittsburgh, PA, US

Overview

5→
Patents
1989–1995
Patent span
Chemistry
Primary field (CPC C)

Patents· 5 as inventor

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

C04Bprimary
C04BLime, magnesia83%
B22DCasting of metals17%
PatentTitleYear
5,418,199'Refractory mix and shapes made therefrom'19955,344,802'MgO-spinel refractory mix and shapes made therefrom'19944,954,463'Magnesium aluminate spinel refractory'19904,847,222'Basic refractory shapes'19894,833,109'Low thermal conductivity magnesite-spinel brick and method'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1990Patents assigned to DRESSER IND (2)· patent assignee history
1989Patents assigned to DRESSERS IND INC (1)· patent assignee history
1989Based in Clairton, PA, US· patent location history
1990Based in Swissvale, PA, US· patent location history
1994–1995Patents assigned to INDRESCO INC (2)· patent assignee history
1994–1995Based in Pittsburgh, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DRESSER IND21989–1990
INDRESCO INC21994–1995
DRESSERS IND INC11989
Locations
LocationPatentsSpan
Pittsburgh, Pennsylvania, US21994–1995
Clairton, Pennsylvania, US21989
Swissvale, Pennsylvania, US11990