NL129927C - - Google Patents

Info

Publication number
NL129927C
NL129927C NL129927DA NL129927C NL 129927 C NL129927 C NL 129927C NL 129927D A NL129927D A NL 129927DA NL 129927 C NL129927 C NL 129927C
Authority
NL
Netherlands
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL129927C publication Critical patent/NL129927C/xx
Priority claimed from GB2970/43A external-priority patent/GB567370A/en
Priority claimed from DEB60086A external-priority patent/DE1124024B/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/14—Hydroxylamine; Salts thereof
    • C01B21/1409—Preparation
    • C01B21/1418—Preparation by catalytic reduction of nitrogen oxides or nitrates with hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
NL129927D 1943-02-23 NL129927C (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2971/43A GB567371A (en) 1943-02-23 1943-02-23 Improvements in or relating to materials for and methods of polishing or finishing articles
GB2970/43A GB567370A (en) 1943-02-23 1943-02-23 Improvements in or relating to methods of polishing articles
DEB60086A DE1124024B (de) 1960-11-15 1960-11-15 Verfahren zur Reinigung verduennter technischer Schwefelsaeure

Publications (1)

Publication Number Publication Date
NL129927C true NL129927C (ja)

Family

ID=27209132

Family Applications (1)

Application Number Title Priority Date Filing Date
NL129927D NL129927C (ja) 1943-02-23

Country Status (2)

Country Link
GB (1) GB567371A (ja)
NL (1) NL129927C (ja)

Also Published As

Publication number Publication date
GB567371A (en) 1945-02-12

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