Inventor

Gary Derdall

Inventor

Saskatoon, CA

Overview

1988–2006

Patent span

Chemistry

Primary field (CPC C)

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

C01Bprimary

C01BNon-metallic elements13%

C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry7%

B03BSeparating solid materials using liquids or using pneumatic tables or jigs7%

B03DFlotation7%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds7%

C04BLime, magnesia7%

C05DInorganic fertilisers not covered by subclasses c05b, c05c7%

C05GMixtures of fertilisers covered individually by different subclasses of class c057%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1988–1992Patents assigned to SASKATCHEWAN POTASH (3)· patent assignee history

1988Based in Saskatchewan, CA· patent location history

1989–2006Based in Saskatoon, CA· patent location history

1992Patents assigned to KAOLIN IND LTD (1)· patent assignee history

2006Patents assigned to DIRDAL RAND TECHNOLOGIES (1)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Locations

Location	Patents	Span
Saskatoon, CA	5	1989–2006
Saskatchewan, CA	1	1988