BG19887A1 - - Google Patents
Info
- Publication number
- BG19887A1 BG19887A1 BG1838671A BG1838671A BG19887A1 BG 19887 A1 BG19887 A1 BG 19887A1 BG 1838671 A BG1838671 A BG 1838671A BG 1838671 A BG1838671 A BG 1838671A BG 19887 A1 BG19887 A1 BG 19887A1
- Authority
- BG
- Bulgaria
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
- C01B17/48—Sulfur dioxide; Sulfurous acid
- C01B17/50—Preparation of sulfur dioxide
- C01B17/501—Preparation of sulfur dioxide by reduction of sulfur compounds
- C01B17/506—Preparation of sulfur dioxide by reduction of sulfur compounds of calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
- C04B7/04—Portland cement using raw materials containing gypsum, i.e. processes of the Mueller-Kuehne type
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD15203270 | 1970-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG19887A1 true BG19887A1 (en:Method) | 1975-10-30 |
Family
ID=5483273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG1838671A BG19887A1 (en:Method) | 1970-12-16 | 1971-08-19 |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT307450B (en:Method) |
| BG (1) | BG19887A1 (en:Method) |
| DE (1) | DE2139334A1 (en:Method) |
| PL (1) | PL72428B1 (en:Method) |
-
1971
- 1971-08-03 AT AT679671A patent/AT307450B/de not_active IP Right Cessation
- 1971-08-06 DE DE19712139334 patent/DE2139334A1/de active Pending
- 1971-08-19 BG BG1838671A patent/BG19887A1/xx unknown
- 1971-12-15 PL PL15217471A patent/PL72428B1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL72428B1 (en:Method) | 1974-06-29 |
| DE2139334A1 (en) | 1972-07-13 |
| AT307450B (de) | 1973-04-15 |