DE2735393A1 - Aktive gele und verfahren zu ihrer herstellung - Google Patents
Aktive gele und verfahren zu ihrer herstellungInfo
- Publication number
- DE2735393A1 DE2735393A1 DE19772735393 DE2735393A DE2735393A1 DE 2735393 A1 DE2735393 A1 DE 2735393A1 DE 19772735393 DE19772735393 DE 19772735393 DE 2735393 A DE2735393 A DE 2735393A DE 2735393 A1 DE2735393 A1 DE 2735393A1
- Authority
- DE
- Germany
- Prior art keywords
- gel
- active
- pharmaceutical
- gelling agent
- component
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 49
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000499 gel Substances 0.000 claims description 161
- 239000000126 substance Substances 0.000 claims description 29
- 239000003349 gelling agent Substances 0.000 claims description 28
- 238000001556 precipitation Methods 0.000 claims description 25
- 239000008252 pharmaceutical gel Substances 0.000 claims description 24
- 238000001035 drying Methods 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000004480 active ingredient Substances 0.000 claims description 14
- 239000012527 feed solution Substances 0.000 claims description 13
- 229910010272 inorganic material Inorganic materials 0.000 claims description 10
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 9
- 229920002307 Dextran Polymers 0.000 claims description 8
- 239000007863 gel particle Substances 0.000 claims description 8
- 150000002484 inorganic compounds Chemical class 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 229920001353 Dextrin Polymers 0.000 claims description 5
- 239000004375 Dextrin Substances 0.000 claims description 5
- 235000019425 dextrin Nutrition 0.000 claims description 5
- 239000000825 pharmaceutical preparation Substances 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 3
- 239000003619 algicide Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003937 drug carrier Substances 0.000 claims description 3
- 230000002363 herbicidal effect Effects 0.000 claims description 3
- 150000004677 hydrates Chemical class 0.000 claims description 3
- 150000004679 hydroxides Chemical class 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004009 herbicide Substances 0.000 claims description 2
- 239000011147 inorganic material Substances 0.000 claims description 2
- 239000000575 pesticide Substances 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 239000002574 poison Substances 0.000 claims 1
- 231100000614 poison Toxicity 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 239000012798 spherical particle Substances 0.000 claims 1
- 229920003169 water-soluble polymer Polymers 0.000 claims 1
- 239000000243 solution Substances 0.000 description 26
- 239000000306 component Substances 0.000 description 21
- 238000000605 extraction Methods 0.000 description 11
- GPKJTRJOBQGKQK-UHFFFAOYSA-N quinacrine Chemical compound C1=C(OC)C=C2C(NC(C)CCCN(CC)CC)=C(C=CC(Cl)=C3)C3=NC2=C1 GPKJTRJOBQGKQK-UHFFFAOYSA-N 0.000 description 11
- 229960000901 mepacrine Drugs 0.000 description 10
- 239000005725 8-Hydroxyquinoline Substances 0.000 description 8
- LVYZJEPLMYTTGH-UHFFFAOYSA-H dialuminum chloride pentahydroxide dihydrate Chemical compound [Cl-].[Al+3].[OH-].[OH-].[Al+3].[OH-].[OH-].[OH-].O.O LVYZJEPLMYTTGH-UHFFFAOYSA-H 0.000 description 8
- 229960003540 oxyquinoline Drugs 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 6
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 6
- 229930006000 Sucrose Natural products 0.000 description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000005720 sucrose Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- KMPWYEUPVWOPIM-UHFFFAOYSA-N cinchonidine Natural products C1=CC=C2C(C(C3N4CCC(C(C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-UHFFFAOYSA-N 0.000 description 4
- KMPWYEUPVWOPIM-LSOMNZGLSA-N cinchonine Chemical compound C1=CC=C2C([C@@H]([C@H]3N4CC[C@H]([C@H](C4)C=C)C3)O)=CC=NC2=C1 KMPWYEUPVWOPIM-LSOMNZGLSA-N 0.000 description 4
- LOUPRKONTZGTKE-UHFFFAOYSA-N cinchonine Natural products C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-UHFFFAOYSA-N 0.000 description 4
- 210000002784 stomach Anatomy 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229940069428 antacid Drugs 0.000 description 3
- 239000003159 antacid agent Substances 0.000 description 3
- 230000001458 anti-acid effect Effects 0.000 description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012362 glacial acetic acid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000002775 capsule Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000008121 dextrose Substances 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000237852 Mollusca Species 0.000 description 1
- 241001354659 Speia Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000361 pesticidal effect Effects 0.000 description 1
- 239000005426 pharmaceutical component Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000011287 therapeutic dose Methods 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0065—Preparation of gels containing an organic phase
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
- A01N25/10—Macromolecular compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1611—Inorganic compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1617—Organic compounds, e.g. phospholipids, fats
- A61K9/1623—Sugars or sugar alcohols, e.g. lactose; Derivatives thereof; Homeopathic globules
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1635—Organic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyvinyl pyrrolidone, poly(meth)acrylates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1652—Polysaccharides, e.g. alginate, cellulose derivatives; Cyclodextrin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/06—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a liquid medium
- B01J2/08—Gelation of a colloidal solution
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Veterinary Medicine (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Dispersion Chemistry (AREA)
- Organic Chemistry (AREA)
- Agronomy & Crop Science (AREA)
- Dentistry (AREA)
- Environmental Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Toxicology (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Inorganic Chemistry (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3297076A GB1590573A (en) | 1976-08-06 | 1976-08-06 | Biologically active gels |
| GB4694676 | 1976-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2735393A1 true DE2735393A1 (de) | 1978-02-09 |
Family
ID=26261652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772735393 Withdrawn DE2735393A1 (de) | 1976-08-06 | 1977-08-05 | Aktive gele und verfahren zu ihrer herstellung |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5320412A (OSRAM) |
| CH (1) | CH640429A5 (OSRAM) |
| DE (1) | DE2735393A1 (OSRAM) |
| FR (1) | FR2360346A1 (OSRAM) |
| IE (1) | IE45649B1 (OSRAM) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253971A (en) * | 1977-06-14 | 1981-03-03 | Macleod Norman A | Water treatment |
| EP0229398A3 (en) * | 1986-01-03 | 1988-06-22 | R.P. Scherer Gmbh | Capsules, and method and apparatus for producing such capsules |
| DE4416001A1 (de) * | 1994-05-06 | 1995-11-30 | Feinchemie Gmbh Sebnitz | Komposite zur steuerbaren Wirkstoff-Freisetzung |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440746A (en) * | 1982-10-28 | 1984-04-03 | Pennwalt Corporation | Granular pesticide composition |
| GB8713263D0 (en) * | 1987-06-05 | 1987-07-08 | Unilever Plc | Spheroidal silica |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1435969A (fr) * | 1965-03-09 | 1966-04-22 | Mise sous la forme gélifiée d'un produit antiparasitaire | |
| GB1231385A (OSRAM) * | 1967-08-04 | 1971-05-12 | ||
| CA980035A (en) * | 1970-09-16 | 1975-12-16 | Kuraray Co. | Process for preparing gelled plastics of polyvinyl alcohol |
| FR2192769A1 (en) * | 1972-07-19 | 1974-02-15 | Applic Produits Anti Par | Insecticidal gels of montmorillonite derivs - for protection of wood and trees from termites |
| AU6650174A (en) * | 1973-03-14 | 1975-09-11 | John Thompson | Spraying gels |
-
1977
- 1977-08-02 IE IE160977A patent/IE45649B1/en unknown
- 1977-08-05 CH CH964877A patent/CH640429A5/de not_active IP Right Cessation
- 1977-08-05 JP JP9403877A patent/JPS5320412A/ja active Pending
- 1977-08-05 FR FR7724315A patent/FR2360346A1/fr active Granted
- 1977-08-05 DE DE19772735393 patent/DE2735393A1/de not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253971A (en) * | 1977-06-14 | 1981-03-03 | Macleod Norman A | Water treatment |
| EP0229398A3 (en) * | 1986-01-03 | 1988-06-22 | R.P. Scherer Gmbh | Capsules, and method and apparatus for producing such capsules |
| DE4416001A1 (de) * | 1994-05-06 | 1995-11-30 | Feinchemie Gmbh Sebnitz | Komposite zur steuerbaren Wirkstoff-Freisetzung |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2360346A1 (fr) | 1978-03-03 |
| JPS5320412A (en) | 1978-02-24 |
| FR2360346B1 (OSRAM) | 1983-10-14 |
| IE45649L (en) | 1978-02-06 |
| IE45649B1 (en) | 1982-10-20 |
| CH640429A5 (en) | 1984-01-13 |
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