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Inventor

Donald R. Spink

Inventor
Waterloo, CA

Overview

22→
Patents
1976–1996
Patent span
Performing operations
Primary field (CPC B)

Patents· 22 as inventor

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

B01Dprimary
B01DSeparation24%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
C22BProduction and refining of metals15%
B05BSpraying apparatus10%
C01BNon-metallic elements7%
Y02PClimate change mitigation technologies in the production or processing of goods7%
C01GCompounds containing metals not covered by subclasses c01d or c01f5%
C05BPhosphatic fertilisers5%
C05GMixtures of fertilisers covered individually by different subclasses of class c055%
Y02ATechnologies for adaptation to climate change2%
PatentTitleYear
5,565,180'Method of treating gases'19965,439,509'Stripping method and apparatus'19955,364,604'Solute gas-absorbing procedure'19945,362,464'Method for removing sulfur oxides'1994RE034586'Spray nozzle design'19945,192,517'Gas reacting method'19935,170,942'Spray nozzle design'19925,114,460'Production of low-chloride alkali metal phosphates'19925,055,124'Production of low-chloride fertilizers'19915,028,410'Hydrometallurgical production of zinc oxide from roasted zinc concentrates'19915,025,989'Spray nozzle design'19915,023,064'Method for removing sulfur oxide'19915,017,346'Process for treating zinc oxide bearing materials'19914,963,329'Gas reacting apparatus and method'19904,950,313'Fine dust removal device'19904,893,752'Spray nozzle design'19904,889,694'Recovery of zinc values from zinc and iron-bearing sulfide materials'19894,865,817'Gas reacting apparatus'19894,778,520'Process for leaching zinc from partially desulfurized zinc concentrates by sulfuric acid'19884,067,703'Gas scrubber and method of operation'19783,966,460'Reduction of metal halides'19763,966,458'Separation of zirconium and hafnium'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to AMAX SPECIALITY METAL CORP (2)· patent assignee history
1976–1996Based in Waterloo, CA· patent location history
1978Based in Ontario, CA· patent location history
1988–1990Patents assigned to UNIV WATERLOO (4)· patent assignee history
1990–1996Patents assigned to TURBOTAK INC (9)· patent assignee history
1991–1992Patents assigned to ALPINE PLANT FOODS LIMITED (2)· patent assignee history
1992–1994Patents assigned to TURBOTAK TECHNOLOGIES INC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TURBOTAK INC91990–1996
UNIV WATERLOO41988–1990
ALPINE PLANT FOODS LIMITED21991–1992
AMAX SPECIALITY METAL CORP21976
TURBOTAK TECHNOLOGIES INC21992–1994
Locations
LocationPatentsSpan
Waterloo, CA211976–1996
Ontario, CA11978