DE2433307C3 - Verfahren zur Abtrennung eines Phosphorsäure-organisches Lösungsmittel-Wasser-Gemisches - Google Patents
Verfahren zur Abtrennung eines Phosphorsäure-organisches Lösungsmittel-Wasser-GemischesInfo
- Publication number
- DE2433307C3 DE2433307C3 DE2433307A DE2433307A DE2433307C3 DE 2433307 C3 DE2433307 C3 DE 2433307C3 DE 2433307 A DE2433307 A DE 2433307A DE 2433307 A DE2433307 A DE 2433307A DE 2433307 C3 DE2433307 C3 DE 2433307C3
- Authority
- DE
- Germany
- Prior art keywords
- phosphoric acid
- solvent
- alkali
- water
- mixture
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims description 70
- 239000000203 mixture Substances 0.000 title claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 34
- 238000000926 separation method Methods 0.000 title description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 114
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 57
- 239000002904 solvent Substances 0.000 claims description 49
- 239000003513 alkali Substances 0.000 claims description 27
- 239000003960 organic solvent Substances 0.000 claims description 14
- 229910019142 PO4 Inorganic materials 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000008346 aqueous phase Substances 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000012074 organic phase Substances 0.000 claims description 5
- -1 aliphatic Alcohols Chemical class 0.000 claims description 4
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 4
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 150000002576 ketones Chemical class 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- 239000012071 phase Substances 0.000 description 45
- 150000003839 salts Chemical class 0.000 description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 238000000605 extraction Methods 0.000 description 19
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- 239000002585 base Substances 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 8
- 238000004821 distillation Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 235000021317 phosphate Nutrition 0.000 description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 229910000318 alkali metal phosphate Inorganic materials 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012047 saturated solution Substances 0.000 description 3
- 239000011877 solvent mixture Substances 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 150000003388 sodium compounds Chemical class 0.000 description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004254 Ammonium phosphate Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000008043 acidic salts Chemical class 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 1
- 235000019289 ammonium phosphates Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000003791 organic solvent mixture Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 description 1
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical class [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/18—Phosphoric acid
- C01B25/234—Purification; Stabilisation; Concentration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0492—Applications, solvents used
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/46—Preparation involving solvent-solvent extraction
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/46—Preparation involving solvent-solvent extraction
- C01B25/461—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound
- C01B25/462—Preparation involving solvent-solvent extraction the phosphoric acid present in the medium obtained after reaction being first extracted from the liquid phase formed or separated then re-extracted as free acid by using water or as a phosphate by using a basic compound the extracting agent being alcohol or a mixture of alcohols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Extraction Or Liquid Replacement (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2433307A DE2433307C3 (de) | 1974-07-11 | 1974-07-11 | Verfahren zur Abtrennung eines Phosphorsäure-organisches Lösungsmittel-Wasser-Gemisches |
| BE155978A BE828616A (fr) | 1974-07-11 | 1975-04-30 | Procede de separation de melange a base d'acide phosphorique |
| NL7505537A NL7505537A (nl) | 1974-07-11 | 1975-05-12 | Werkwijze voor het scheiden van fosforzuur-op- losmiddel-watermengsels. |
| GB21811/75A GB1497326A (en) | 1974-07-11 | 1975-05-21 | Process for separating the three-component mixture phosphoric acid/solvent/water by the addition of an alkali metal compound or ammonium compound |
| IT24090/75A IT1038747B (it) | 1974-07-11 | 1975-06-06 | Procedimento per separare miscele di acido fosforico solvente acqua |
| FR7521785A FR2277768A1 (fr) | 1974-07-11 | 1975-07-04 | Procede de separation des constituants de melanges d'acide phosphorique, de solvants et d'eau |
| SE7507917A SE411444B (sv) | 1974-07-11 | 1975-07-10 | Sett att separera blandningar av fosforsyra, losningsmedel och vatten |
| US05/864,158 US4117092A (en) | 1974-07-03 | 1977-12-27 | Process for separating a phosphoric acid-solvent solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2433307A DE2433307C3 (de) | 1974-07-11 | 1974-07-11 | Verfahren zur Abtrennung eines Phosphorsäure-organisches Lösungsmittel-Wasser-Gemisches |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2433307A1 DE2433307A1 (de) | 1976-01-29 |
| DE2433307B2 DE2433307B2 (de) | 1977-10-27 |
| DE2433307C3 true DE2433307C3 (de) | 1984-03-22 |
Family
ID=5920267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2433307A Expired DE2433307C3 (de) | 1974-07-03 | 1974-07-11 | Verfahren zur Abtrennung eines Phosphorsäure-organisches Lösungsmittel-Wasser-Gemisches |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4117092A (enExample) |
| BE (1) | BE828616A (enExample) |
| DE (1) | DE2433307C3 (enExample) |
| FR (1) | FR2277768A1 (enExample) |
| GB (1) | GB1497326A (enExample) |
| IT (1) | IT1038747B (enExample) |
| NL (1) | NL7505537A (enExample) |
| SE (1) | SE411444B (enExample) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2447348A1 (fr) * | 1979-01-24 | 1980-08-22 | Rhone Poulenc Ind | Procede de purification d'un acide phosphorique impur |
| NL7905699A (nl) * | 1979-07-24 | 1981-01-27 | Stamicarbon | Werkwijze voor het bereiden van fosfaten en een uraniumbevattend concentraat uit natproces fosforzuur, alsmede fosfaten en uraniumbevattend concentraat ver- kregen onder toepassing van deze werkwijze. |
| JPS56100117A (en) * | 1980-01-14 | 1981-08-11 | Toyo Soda Mfg Co Ltd | Purifying method for wet process phosphoric acid |
| US4311681A (en) * | 1980-05-19 | 1982-01-19 | Fmc Corporation | Method of regenerating phosphoric acid extraction solvent |
| DE3413020A1 (de) * | 1984-04-06 | 1985-10-17 | Hoechst Ag, 6230 Frankfurt | Verfahren zur herstellung einer alkaliphosphatloesung |
| US4751066A (en) * | 1986-05-08 | 1988-06-14 | Fmc Corporation | Process for preparing alkali metal phosphate |
| US4676963A (en) * | 1986-05-09 | 1987-06-30 | Fmc Corporation | Manufacture of sodium tripolyphosphate from wet acid |
| DE3705069A1 (de) * | 1987-02-18 | 1988-09-01 | Hoechst Ag | Verfahren zur herstellung titanfreier phosphorsaeure |
| FR2631329B1 (fr) * | 1988-05-11 | 1991-10-11 | Srti Soc Rech Tech Ind | Procede de purification et de recuperation des bains de rincage de brillantage, et moyens de mise en oeuvre de ce procede |
| US4877594A (en) * | 1988-12-13 | 1989-10-31 | J. R. Simplot Co. | Purification of phosphoric acid |
| AU2015339815B2 (en) * | 2014-10-30 | 2019-05-02 | Jesa, Sa | Method for removing iron in the manufacture of phosphoric acid |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1981145A (en) * | 1933-10-21 | 1934-11-20 | Minerals Separation North Us | Process of producing phosphoric acid |
| US2885265A (en) * | 1955-06-21 | 1959-05-05 | Horizons Inc | Process for producing substantially pure orthophosphoric acid |
| US3367738A (en) * | 1963-09-23 | 1968-02-06 | Tennessee Corp | Process for purifying wet process phosphoric acid with ethyl ether |
| DE1811813C3 (de) * | 1967-05-11 | 1983-03-10 | Produits Chimiques, Pechiney-Saint-Gobain S.A., Neuilly-sur-Seine | Kontinuierliches Verfahren zum Reinigen einer Rohphosphorsäure-Aufschlußlösung |
| FR1531487A (fr) * | 1967-05-11 | 1968-07-05 | Pechiney Saint Gobain | Procédé continu perfectionné de purification de l'acide phosphorique par les solvants |
| BE757550A (fr) * | 1969-10-16 | 1971-03-16 | Giulini Gmbh Geb | Procede de preparation de phosphates purs a partir d'acides phosphoriques impurs |
| DE2029564C3 (de) * | 1970-06-16 | 1978-06-22 | Giulini Chemie Gmbh, 6700 Ludwigshafen | Verfahren zur Herstellung von reinen Alkaliphosphaten aus Rohphosphorsäure |
| DE2050406C3 (de) * | 1970-10-14 | 1978-04-06 | Budenheim Rud A Oetker Chemie | Verfahren zur Reinigung von technischer Phosporsäure |
| GB1345710A (en) * | 1971-06-28 | 1974-02-06 | Albright & Wilson | Manufacture of phosphoric acid and alkali metal phosphates |
| DE2204779B2 (de) * | 1972-02-02 | 1976-06-16 | Friedrich Uhde Gmbh, 4600 Dortmund | Verfahren zur herstellung von ammonphosphaten |
| DE2229602B1 (de) * | 1972-06-19 | 1973-09-27 | Chemische Fabrik Budenheim, Rudolf A. Oetker, 6501 Budenheim | Verfahren zur Reinigung von technischer Phosphorsaure |
-
1974
- 1974-07-11 DE DE2433307A patent/DE2433307C3/de not_active Expired
-
1975
- 1975-04-30 BE BE155978A patent/BE828616A/xx not_active IP Right Cessation
- 1975-05-12 NL NL7505537A patent/NL7505537A/xx not_active Application Discontinuation
- 1975-05-21 GB GB21811/75A patent/GB1497326A/en not_active Expired
- 1975-06-06 IT IT24090/75A patent/IT1038747B/it active
- 1975-07-04 FR FR7521785A patent/FR2277768A1/fr active Granted
- 1975-07-10 SE SE7507917A patent/SE411444B/xx unknown
-
1977
- 1977-12-27 US US05/864,158 patent/US4117092A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2277768B1 (enExample) | 1981-03-20 |
| NL7505537A (nl) | 1976-01-13 |
| FR2277768A1 (fr) | 1976-02-06 |
| DE2433307B2 (de) | 1977-10-27 |
| SE411444B (sv) | 1979-12-27 |
| BE828616A (fr) | 1975-08-18 |
| IT1038747B (it) | 1979-11-30 |
| US4117092A (en) | 1978-09-26 |
| DE2433307A1 (de) | 1976-01-29 |
| SE7507917L (sv) | 1976-01-12 |
| GB1497326A (en) | 1978-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8281 | Inventor (new situation) |
Free format text: BELTZ, KLAUS, DR.RER.NAT., 6501 BUDENHEIM, DE FRANKENFELD, KLAUS, DR.RER.NAT., 6257 HUENFELDEN, DE |
|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |