DE2506515A1 - Verfahren zur herstellung von 2-aminomethylpyrrolidin - Google Patents
Verfahren zur herstellung von 2-aminomethylpyrrolidinInfo
- Publication number
- DE2506515A1 DE2506515A1 DE19752506515 DE2506515A DE2506515A1 DE 2506515 A1 DE2506515 A1 DE 2506515A1 DE 19752506515 DE19752506515 DE 19752506515 DE 2506515 A DE2506515 A DE 2506515A DE 2506515 A1 DE2506515 A1 DE 2506515A1
- Authority
- DE
- Germany
- Prior art keywords
- benzyl
- aminomethylpyrrolidine
- pyrrolidone
- reduction
- preparation
- 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.)
- Pending
Links
- AUKXFNABVHIUAC-UHFFFAOYSA-N pyrrolidin-2-ylmethylamine Chemical compound NCC1CCCN1 AUKXFNABVHIUAC-UHFFFAOYSA-N 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 9
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims description 6
- QGRRJDFZPVWRGG-UHFFFAOYSA-N 1-benzyl-2-(nitromethylidene)pyrrolidine Chemical compound [O-][N+](=O)C=C1CCCN1CC1=CC=CC=C1 QGRRJDFZPVWRGG-UHFFFAOYSA-N 0.000 claims description 5
- LVUQCTGSDJLWCE-UHFFFAOYSA-N 1-benzylpyrrolidin-2-one Chemical compound O=C1CCCN1CC1=CC=CC=C1 LVUQCTGSDJLWCE-UHFFFAOYSA-N 0.000 claims description 4
- 150000008051 alkyl sulfates Chemical class 0.000 claims description 4
- OEYAFMGVIFWPQI-UHFFFAOYSA-N (1-benzylpyrrolidin-2-yl)methanamine Chemical compound NCC1CCCN1CC1=CC=CC=C1 OEYAFMGVIFWPQI-UHFFFAOYSA-N 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 claims description 2
- 238000010531 catalytic reduction reaction Methods 0.000 claims 1
- 150000007522 mineralic acids Chemical class 0.000 claims 1
- 235000005985 organic acids Nutrition 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical compound C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 9
- 235000019441 ethanol Nutrition 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- -1 benzyl compound Chemical class 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000007868 Raney catalyst Substances 0.000 description 4
- 229910000564 Raney nickel Inorganic materials 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- DSQKLPXLRYKLHE-UHFFFAOYSA-N 1-benzyl-3-methylidene-2-nitropyrrolidine Chemical compound C(C1=CC=CC=C1)N1C(C(CC1)=C)[N+](=O)[O-] DSQKLPXLRYKLHE-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 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
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- LKMGDZMCCPSUFI-UHFFFAOYSA-N 2-(nitromethylidene)pyrrolidine Chemical compound [O-][N+](=O)C=C1CCCN1 LKMGDZMCCPSUFI-UHFFFAOYSA-N 0.000 description 1
- JFZLDRUSMYBXRI-UHFFFAOYSA-N 2-ethylpyrrolidine Chemical compound CCC1CCCN1 JFZLDRUSMYBXRI-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- DENRZWYUOJLTMF-UHFFFAOYSA-N diethyl sulfate Chemical compound CCOS(=O)(=O)OCC DENRZWYUOJLTMF-UHFFFAOYSA-N 0.000 description 1
- 229940008406 diethyl sulfate Drugs 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical group CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- MCSAJNNLRCFZED-UHFFFAOYSA-N nitroethane Chemical compound CC[N+]([O-])=O MCSAJNNLRCFZED-UHFFFAOYSA-N 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D207/24—Oxygen or sulfur atoms
- C07D207/26—2-Pyrrolidones
- C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
- C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/04—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D207/08—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hydrocarbon radicals, substituted by hetero atoms, attached to ring carbon atoms
- C07D207/09—Radicals substituted by nitrogen atoms, not forming part of a nitro radical
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/20—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrrole Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7407342A FR2263239B1 (en, 2012) | 1974-03-04 | 1974-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2506515A1 true DE2506515A1 (de) | 1975-09-11 |
Family
ID=9135811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752506515 Pending DE2506515A1 (de) | 1974-03-04 | 1975-02-15 | Verfahren zur herstellung von 2-aminomethylpyrrolidin |
Country Status (33)
| Country | Link |
|---|---|
| JP (1) | JPS5948825B2 (en, 2012) |
| AR (1) | AR207350A1 (en, 2012) |
| AT (1) | AT358569B (en, 2012) |
| BE (1) | BE825728A (en, 2012) |
| BG (1) | BG25077A3 (en, 2012) |
| CA (1) | CA1047041A (en, 2012) |
| CH (1) | CH602636A5 (en, 2012) |
| CS (1) | CS179935B2 (en, 2012) |
| DD (1) | DD117450A5 (en, 2012) |
| DE (1) | DE2506515A1 (en, 2012) |
| DK (1) | DK83875A (en, 2012) |
| EG (1) | EG11753A (en, 2012) |
| ES (1) | ES435139A1 (en, 2012) |
| FI (1) | FI750558A7 (en, 2012) |
| FR (1) | FR2263239B1 (en, 2012) |
| GB (1) | GB1481251A (en, 2012) |
| HK (1) | HK27878A (en, 2012) |
| HU (1) | HU169274B (en, 2012) |
| IE (1) | IE40685B1 (en, 2012) |
| IL (1) | IL46657A (en, 2012) |
| LU (1) | LU71947A1 (en, 2012) |
| MW (1) | MW875A1 (en, 2012) |
| NL (1) | NL7502425A (en, 2012) |
| NO (1) | NO145439C (en, 2012) |
| OA (1) | OA04856A (en, 2012) |
| PH (1) | PH11269A (en, 2012) |
| PL (1) | PL94801B1 (en, 2012) |
| RO (1) | RO64007A (en, 2012) |
| SE (1) | SE401367B (en, 2012) |
| SU (1) | SU591139A3 (en, 2012) |
| YU (1) | YU36500B (en, 2012) |
| ZA (1) | ZA751072B (en, 2012) |
| ZM (1) | ZM2775A1 (en, 2012) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4772459A (en) * | 1986-09-09 | 1988-09-20 | Erbamont, Inc. | Method for controlling emesis caused by chemotherapeutic agents and antiemetic agents useful therein |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1785124A1 (de) * | 1968-08-13 | 1971-11-11 | Prym Werke William | Reissverschluss |
| JPS5146901B2 (en, 2012) * | 1971-08-24 | 1976-12-11 | ||
| CH556836A (de) * | 1971-09-30 | 1974-12-13 | Fratmann Ag | Verfahren zur herstellung von 1-alkenyl-2-aminomethylpyrrolidinen. |
| NL7304089A (en, 2012) * | 1972-03-30 | 1973-10-02 | ||
| CH573404A5 (en, 2012) * | 1972-07-28 | 1976-03-15 | Inventa Ag |
-
1974
- 1974-03-04 CH CH272675A patent/CH602636A5/xx not_active IP Right Cessation
- 1974-03-04 FR FR7407342A patent/FR2263239B1/fr not_active Expired
- 1974-03-04 RO RO7400081539A patent/RO64007A/ro unknown
-
1975
- 1975-01-01 AR AR257827A patent/AR207350A1/es active
- 1975-02-15 DE DE19752506515 patent/DE2506515A1/de active Pending
- 1975-02-18 IL IL46657A patent/IL46657A/en unknown
- 1975-02-20 ZA ZA00751072A patent/ZA751072B/xx unknown
- 1975-02-20 BE BE1006472A patent/BE825728A/xx not_active IP Right Cessation
- 1975-02-24 IE IE377/75A patent/IE40685B1/xx unknown
- 1975-02-24 GB GB7645/75A patent/GB1481251A/en not_active Expired
- 1975-02-25 EG EG93/75A patent/EG11753A/xx active
- 1975-02-26 FI FI750558A patent/FI750558A7/fi not_active Application Discontinuation
- 1975-02-26 CA CA220,855A patent/CA1047041A/en not_active Expired
- 1975-02-27 ES ES435139A patent/ES435139A1/es not_active Expired
- 1975-02-28 NL NL7502425A patent/NL7502425A/xx not_active Application Discontinuation
- 1975-02-28 MW MW8/75A patent/MW875A1/xx unknown
- 1975-03-03 BG BG029132A patent/BG25077A3/xx unknown
- 1975-03-03 DK DK83875*#A patent/DK83875A/da not_active Application Discontinuation
- 1975-03-03 LU LU71947A patent/LU71947A1/xx unknown
- 1975-03-03 AT AT160575A patent/AT358569B/de not_active IP Right Cessation
- 1975-03-03 SE SE7502340A patent/SE401367B/xx not_active IP Right Cessation
- 1975-03-03 DD DD184512A patent/DD117450A5/xx unknown
- 1975-03-03 HU HUSO1136A patent/HU169274B/hu not_active IP Right Cessation
- 1975-03-03 PH PH16855A patent/PH11269A/en unknown
- 1975-03-03 NO NO750699A patent/NO145439C/no unknown
- 1975-03-03 PL PL1975178472A patent/PL94801B1/pl unknown
- 1975-03-03 SU SU752111076A patent/SU591139A3/ru active
- 1975-03-04 JP JP50026947A patent/JPS5948825B2/ja not_active Expired
- 1975-03-04 ZM ZM27/75A patent/ZM2775A1/xx unknown
- 1975-03-04 CS CS7500001451A patent/CS179935B2/cs unknown
- 1975-03-04 OA OA55432A patent/OA04856A/xx unknown
- 1975-03-19 YU YU00676/75A patent/YU36500B/xx unknown
-
1978
- 1978-06-01 HK HK278/78A patent/HK27878A/xx unknown
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