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
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
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- 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)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Polishing Bodies And Polishing Tools (AREA)
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 (en) | 1960-11-15 | 1960-11-15 | Process for the purification of dilute technical sulfuric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL129927C true NL129927C (en) |
Family
ID=27209132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL129927D NL129927C (en) | 1943-02-23 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB567371A (en) |
| NL (1) | NL129927C (en) |
-
0
- NL NL129927D patent/NL129927C/xx active
-
1943
- 1943-02-23 GB GB2971/43A patent/GB567371A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB567371A (en) | 1945-02-12 |