LexDanaLexDanabeta
Inventor

Frans R. P. Pienaar

Inventor
Krugersdorp, ZA

Overview

7→
Patents
1992–2006
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 7 as inventor

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

E21Dprimary
E21DShafts100%
PatentTitleYear
7,073,981'Rock stabilizer'20065,658,099'Prop headboard'19975,435,670'Spacer assembly and method'19955,427,476'Mine prop headboard'19955,318,387'Yieldable load support'19945,288,178'Preload headboard for an elongate prop'19945,149,228'Prop preloading apparatus'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1995Patents assigned to H L & H TIMBER PROD (3)· patent assignee history
1992Based in Noordheuwel, ZA· patent location history
1994–1995Patents assigned to HL & H TIMBER PRODUCTS PTY LTD (2)· patent assignee history
1994–1997Based in Krugersdorp, ZA· patent location history
1995Based in Transvaal, ZA· patent location history
1997Patents assigned to HL & H TIMBER PRODUCTS PROPREI (1)· patent assignee history
2006Patents assigned to HOWELL MARK (1)· patent assignee history
2006Patents assigned to PIENAAR FRANS ROELOF PETRUS (1)· patent assignee history
2006Based in Paardekraal, 1752, ZA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
H L & H TIMBER PROD31992–1995
HL & H TIMBER PRODUCTS PTY LTD21994–1995
HL & H TIMBER PRODUCTS PROPREI11997
HOWELL MARK12006
PIENAAR FRANS ROELOF PETRUSself12006
Locations
LocationPatentsSpan
Krugersdorp, ZA41994–1997
Paardekraal, 1752, ZA12006
Transvaal, ZA11995
Noordheuwel, ZA11992