FI64898C - Foerfarande foer inkapsling av finfoerdelat material och anvaendning av de medelst foerfarandet erhaollna mikrokapslarna - Google Patents
Foerfarande foer inkapsling av finfoerdelat material och anvaendning av de medelst foerfarandet erhaollna mikrokapslarna Download PDFInfo
- Publication number
- FI64898C FI64898C FI763411A FI763411A FI64898C FI 64898 C FI64898 C FI 64898C FI 763411 A FI763411 A FI 763411A FI 763411 A FI763411 A FI 763411A FI 64898 C FI64898 C FI 64898C
- Authority
- FI
- Finland
- Prior art keywords
- process according
- formaldehyde precondensate
- polymer
- dispersion
- water
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/165—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components characterised by the use of microcapsules; Special solvents for incorporating the ingredients
-
- 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
- B01J13/02—Making microcapsules or microballoons
- B01J13/06—Making microcapsules or microballoons by phase separation
- B01J13/14—Polymerisation; cross-linking
- B01J13/18—In situ polymerisation with all reactants being present in the same phase
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/914—Transfer or decalcomania
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/254—Polymeric or resinous material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2984—Microcapsule with fluid core [includes liposome]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2984—Microcapsule with fluid core [includes liposome]
- Y10T428/2985—Solid-walled microcapsule from synthetic polymer
- Y10T428/2987—Addition polymer from unsaturated monomers only
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Color Printing (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Claims (17)
1. Förfarande för inkapsling av ett finfördelat material för erhällande av mikrokapslar, väri partiklarna är omslutna av ett polymerskikt, i vilket förfarandet man bildar en dispersion av det finfördelade materialet i ett vattenhaltigt medium innehällande vattenlösliga aminoformaldehydförkondensat samt en vattenlöslig polymer, som kan tvärbindas under inverkan av förkondensaten, ooh kondenserar förkondensaten medelst sur katalys för att tvärbinda polymeren omkring partiklarna, kännetecknat därav, att de vattenlösliga förkondensaten omfattar bade ett ureaformaldehyd-och ett melaminformaldehydförkondensat.
2. Förfarande enligt patentkravet 1, kännetecknat därav, att det finfördelade materialet bestär av smä droppar av en i vatten oblandbar vätska och den vattenlösliga polymeren är en dispersionstabiliserande polymer.
3. Förfarande enligt patentkravet 1 eller 2, kännetecknat därav, att polymeren innehaller alkohol-, amin-, amid-,syra-eller syraderxvatgrupper.
4. Förfarande enligt patentkravet 3, kännetecknat därav, att polymeren är ett cellulosaderivat,stärkelse,ett stärkelse-derivat, en polvsyra, en polyester, en polyanhydrid-sampolymer, en polyakrylamid eller en polyakrylamid-sampolymer.
5. Förfarande enligt patentkravet 4, kännetecknat därav, att polymeren är en akrylamid/akrylsyra-sampolymer.
6. Förfarande enligt nägot av föregäende patentkrav, kännetecknat därav, att polymeren är jonisk.
7. Förfarande enligt patentkravet 6, kännetecknat därav, att polymeren är anjonisk.
8. Förfarande enligt nägot av föregäende patentkrav, kännetecknat därav, att ureaformaldehyd-förkondensatet är katjoniskt.
9. Förfarande enligt nägot av föregäende patentkrav, kännetecknat därav, att melaminformaldehydförkondensatet är ett metylerat melaminformaldehydförkondensat.
10. Förfarande enligt nägot av föregäende patentkrav, kännetecknat därav, att ureaformaldehydförkondensatet, melamin-formaldehydförkondensatet och den vattenlösliga polymeren alla före-
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB48616/75A GB1507739A (en) | 1975-11-26 | 1975-11-26 | Capsules |
GB4861675 | 1975-11-26 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI763411A FI763411A (sv) | 1977-05-27 |
FI64898B FI64898B (fi) | 1983-10-31 |
FI64898C true FI64898C (fi) | 1984-02-10 |
Family
ID=10449274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI763411A FI64898C (fi) | 1975-11-26 | 1976-11-26 | Foerfarande foer inkapsling av finfoerdelat material och anvaendning av de medelst foerfarandet erhaollna mikrokapslarna |
Country Status (25)
Country | Link |
---|---|
US (1) | US4105823A (sv) |
JP (1) | JPS5266878A (sv) |
AT (1) | AT353751B (sv) |
AU (1) | AU500603B2 (sv) |
BE (1) | BE848813A (sv) |
BR (1) | BR7607917A (sv) |
CA (1) | CA1067761A (sv) |
CH (1) | CH626270A5 (sv) |
DE (1) | DE2652875C2 (sv) |
DK (1) | DK533476A (sv) |
ES (1) | ES453710A1 (sv) |
FI (1) | FI64898C (sv) |
FR (1) | FR2332798A1 (sv) |
GB (1) | GB1507739A (sv) |
GR (1) | GR62016B (sv) |
IE (1) | IE43877B1 (sv) |
IT (1) | IT1078598B (sv) |
LU (1) | LU76257A1 (sv) |
NL (1) | NL179707C (sv) |
NO (1) | NO145975C (sv) |
PT (1) | PT65863B (sv) |
RO (1) | RO71467A (sv) |
SE (1) | SE426212B (sv) |
YU (1) | YU279776A (sv) |
ZA (1) | ZA766730B (sv) |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4201404A (en) * | 1978-05-17 | 1980-05-06 | Minnesota Mining And Manufacturing Company | Pressure-sensitive marking materials |
JPS5833116B2 (ja) * | 1979-03-28 | 1983-07-18 | 三菱製紙株式会社 | 自己発色型感圧記録紙 |
DE2940786A1 (de) * | 1979-10-08 | 1981-04-16 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von mikrokapseln |
US4396670A (en) * | 1980-04-08 | 1983-08-02 | The Wiggins Teape Group Limited | Process for the production of microcapsules |
AU547532B2 (en) * | 1980-08-20 | 1985-10-24 | Kureha Kagaku Kogyo K.K. | Microcapsule |
US5160529A (en) * | 1980-10-30 | 1992-11-03 | Imperial Chemical Industries Plc | Microcapsules and microencapsulation process |
JPS57147430A (en) * | 1981-03-06 | 1982-09-11 | Kureha Chem Ind Co Ltd | Preparation of microcapsule |
JPS5814942A (ja) * | 1981-07-17 | 1983-01-28 | Jujo Paper Co Ltd | 微小カプセルの製造方法 |
JPS5882785A (ja) * | 1981-11-12 | 1983-05-18 | Kureha Chem Ind Co Ltd | 感圧記録紙用微小カプセル及びその製造方法 |
US4454083A (en) * | 1981-12-21 | 1984-06-12 | Appleton Papers Inc. | Continuous microencapsulation |
JPS58124705A (ja) * | 1982-01-18 | 1983-07-25 | Kureha Chem Ind Co Ltd | マイクロカプセル化農薬及びその製造方法 |
JPS58139738A (ja) * | 1982-02-13 | 1983-08-19 | Mitsubishi Paper Mills Ltd | 微小カプセル |
US4444699A (en) * | 1982-04-20 | 1984-04-24 | Appleton Papers Inc. | Capsule manufacture |
US4552811A (en) * | 1983-07-26 | 1985-11-12 | Appleton Papers Inc. | Capsule manufacture |
GB8326902D0 (en) * | 1983-10-07 | 1983-11-09 | Wiggins Teape Group Ltd | Removal of formaldehyde from micro-capsules |
US5089339A (en) * | 1984-12-24 | 1992-02-18 | Pietsch Guenter | Aminoplast microencapsulation system |
DE3565942D1 (en) * | 1984-12-24 | 1988-12-08 | Koehler August Papierfab | Process for encapsulating oils containing products which produce a colour by reaction, microcapsules produced by said process and their use in carbon papers |
DE3545803C2 (de) * | 1984-12-24 | 1991-02-14 | Papierfabrik August Koehler AG, 7602 Oberkirch | Verfahren zur Mikroverkapselung von Ölen mit darin gelösten Farbreaktionspartnern, danach hergestellte Mikrokapseln und deren Verwendung in Farbreaktionsaufzeichnungssystemen |
JPS63171637A (ja) * | 1987-01-07 | 1988-07-15 | Nippon Paint Co Ltd | 粉体マイクロカプセルおよびその製法 |
GB8901254D0 (en) * | 1989-01-20 | 1989-03-15 | Allied Colloids Ltd | Particulate materials and their production |
US5460817A (en) * | 1988-01-19 | 1995-10-24 | Allied Colloids Ltd. | Particulate composition comprising a core of matrix polymer with active ingredient distributed therein |
US5194263A (en) * | 1989-01-20 | 1993-03-16 | Allied Colloids Limited | Particulate materials, their production and use |
JP2634836B2 (ja) * | 1988-01-29 | 1997-07-30 | 大王製紙株式会社 | マイクロカプセルの製造方法 |
US5283016A (en) * | 1989-03-09 | 1994-02-01 | The Mead Corporation | Method for preparing photosensitive microcapsules |
US5064470A (en) * | 1989-07-27 | 1991-11-12 | Eurand America, Inc. | High solids, low viscosity carbonless paper gelatin base microcapsule system |
US5196149A (en) * | 1989-07-27 | 1993-03-23 | Eurand America, Inc. | Preparation of high solids, low viscosity carbonless paper gelatin base microcapsules |
US5462915A (en) * | 1989-09-28 | 1995-10-31 | Sandoz Ltd. | Process for producing microcapsules |
CA2040418A1 (en) * | 1989-09-28 | 1991-03-29 | David C. Creech | Microencapsulated agricultural chemicals |
EP0449537B1 (en) * | 1990-03-27 | 1996-03-06 | The Wiggins Teape Group Limited | Pressure-sensitive copying paper |
DE4130398A1 (de) * | 1990-09-17 | 1992-03-19 | Mitsubishi Paper Mills Ltd | Waermeempfindliche aufzeichnungszusammensetzung und verfahren zu ihrer herstellung |
GB9110608D0 (en) * | 1991-05-16 | 1991-07-03 | Wiggins Teape Group Ltd | Colour developer composition |
EP0573210B2 (en) * | 1992-06-04 | 2005-11-23 | Arjo Wiggins Limited | Pressure-sensitive record material |
GB9221621D0 (en) * | 1992-10-15 | 1992-11-25 | Wiggins Teape Group Ltd | Solvents for use in pressure-sensitive record material |
GB9313790D0 (en) * | 1993-07-03 | 1993-08-18 | Wiggins Teape Group The Ltd | Pressure-sensitive copying material |
GB9323634D0 (en) * | 1993-11-16 | 1994-01-05 | Warwick Int Ltd | Bleach activator compositions |
CA2193968A1 (en) * | 1994-06-28 | 1996-01-11 | Jeffrey G. Clark | Ph-modified biocompatible monomer and polymer compositions |
GB9414637D0 (en) * | 1994-07-20 | 1994-09-07 | Wiggins Teape Group The Limite | Presure-sensitive copying material |
GB9522233D0 (en) * | 1995-10-31 | 1996-01-03 | Wiggins Teape Group The Limite | Pressure-sensitive copying paper |
NL1006444C2 (nl) * | 1997-07-01 | 1999-01-05 | Inst Voor Agrotech Onderzoek | Inkapseling van werkzame stoffen. |
DE10049777A1 (de) * | 2000-10-09 | 2002-04-18 | Fraunhofer Ges Forschung | Mit einem Aminoplast mikroverkapselte Feststoffe und Verfahren zu deren Herstellung |
US7807076B2 (en) * | 2001-10-25 | 2010-10-05 | Ciba Specialty Chemicals Corp. | Process for the preparation of microcapsules |
US7108190B2 (en) * | 2003-02-28 | 2006-09-19 | Appleton Papers Inc. | Token array and method employing authentication tokens bearing scent formulation information |
US6932602B2 (en) * | 2003-04-22 | 2005-08-23 | Appleton Papers Inc. | Dental articulation kit and method |
US20060063125A1 (en) * | 2003-04-22 | 2006-03-23 | Hamilton Timothy F | Method and device for enhanced dental articulation |
US20040251309A1 (en) * | 2003-06-10 | 2004-12-16 | Appleton Papers Inc. | Token bearing magnetc image information in registration with visible image information |
GB0409570D0 (en) | 2004-04-29 | 2004-06-02 | Ciba Spec Chem Water Treat Ltd | Particulate compositions and their manufacture |
US20060024340A1 (en) * | 2004-07-30 | 2006-02-02 | Elder Stewart T | Encapsulated fluorescent whitening compositions for improved surface appearance |
US8267576B2 (en) | 2004-11-08 | 2012-09-18 | Freshpoint Holdings Sa | Time-temperature indicating device |
US20070138674A1 (en) * | 2005-12-15 | 2007-06-21 | Theodore James Anastasiou | Encapsulated active material with reduced formaldehyde potential |
US20070138671A1 (en) * | 2005-12-15 | 2007-06-21 | Anastasiou Theodore J | Encapsulated active material with reduced formaldehyde potential |
US20070191256A1 (en) * | 2006-02-10 | 2007-08-16 | Fossum Renae D | Fabric care compositions comprising formaldehyde scavengers |
EP1989283A2 (en) * | 2006-02-28 | 2008-11-12 | The Procter and Gamble Company | Compositions comprising benefit agent containing delivery particles |
DE602006008432D1 (de) * | 2006-05-09 | 2009-09-24 | Cognis Ip Man Gmbh | Verwendung von Mikrokapseln zur Herstellung von Farben und Lacken |
CA2669239A1 (en) | 2006-11-17 | 2008-05-22 | Ciba Holding Inc. | Microcapsules, their use and processes for their manufacture |
GB0623110D0 (en) | 2006-11-21 | 2006-12-27 | Ciba Sc Holding Ag | Microcapules, their use and processes for their manufacture |
EP2094828B1 (en) | 2006-11-22 | 2013-01-02 | Appleton Papers Inc. | Benefit agent containing delivery particle |
GB0623748D0 (en) | 2006-11-28 | 2007-01-10 | Ciba Sc Holding Ag | Microcapsules, their use and processes for their manufacture |
US7935201B2 (en) * | 2006-11-29 | 2011-05-03 | Wausau Paper Mills, Llc | Non-slip masking product, and methods |
KR20100032409A (ko) | 2007-06-12 | 2010-03-25 | 바스프 에스이 | 마이크로캡슐, 이의 용도 및 이의 제조 방법 |
US8067089B2 (en) * | 2008-05-01 | 2011-11-29 | Appleton Papers Inc. | Cationic microcapsule particles |
CN102077060B (zh) | 2008-06-04 | 2014-10-29 | G·帕特尔 | 一种基于腐蚀金属的监测系统 |
US8343437B2 (en) | 2008-06-04 | 2013-01-01 | Jp Laboratories, Inc. | Monitoring system based on etching of metals |
US7915215B2 (en) | 2008-10-17 | 2011-03-29 | Appleton Papers Inc. | Fragrance-delivery composition comprising boron and persulfate ion-crosslinked polyvinyl alcohol microcapsules and method of use thereof |
GB0909280D0 (en) | 2009-06-01 | 2009-07-15 | Ciba Holding Inc | Wall form system |
GB0911562D0 (en) | 2009-07-03 | 2009-08-12 | Basf Se | Foam composition |
WO2011084141A2 (en) * | 2009-12-21 | 2011-07-14 | Appleton Papers Inc. | Hydrophilic liquid encapsulates |
US9993793B2 (en) | 2010-04-28 | 2018-06-12 | The Procter & Gamble Company | Delivery particles |
US20110269657A1 (en) | 2010-04-28 | 2011-11-03 | Jiten Odhavji Dihora | Delivery particles |
US9186642B2 (en) | 2010-04-28 | 2015-11-17 | The Procter & Gamble Company | Delivery particle |
CA2812063A1 (en) | 2010-08-30 | 2012-06-07 | President And Fellows Of Harvard College | Shear controlled release for stenotic lesions and thrombolytic therapies |
WO2012138696A2 (en) | 2011-04-07 | 2012-10-11 | The Procter & Gamble Company | Shampoo compositions with increased deposition of polyacrylate microcapsules |
JP2014510140A (ja) | 2011-04-07 | 2014-04-24 | ザ プロクター アンド ギャンブル カンパニー | ポリアクリレートマイクロカプセルの付着が増大したコンディショナー組成物 |
CN103458859A (zh) | 2011-04-07 | 2013-12-18 | 宝洁公司 | 具有增强的聚丙烯酸酯微胶囊的沉积的个人清洁组合物 |
EP3068860B1 (en) * | 2013-11-11 | 2019-08-21 | International Flavors & Fragrances Inc. | Multi-capsule compositions |
CA2996668C (en) | 2015-10-27 | 2023-09-26 | Encapsys, Llc | Encapsulation |
CN110168042B (zh) | 2017-01-27 | 2022-05-27 | 恩盖普有限公司 | 包封物 |
CA3106374A1 (en) | 2019-01-11 | 2020-07-16 | Encapsys, Llc | Incorporation of chitosan in microcapsule wall |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2473463A (en) * | 1947-05-22 | 1949-06-14 | American Cyanamid Co | Alkylated melamine-formaldehyde liquid compositions |
US2838468A (en) * | 1953-05-25 | 1958-06-10 | Monsanto Chemicals | Process for preparing aminoplasts in bead form comprising reacting aminealdehyde resins with anionic polyelectrolytes |
US3137631A (en) * | 1959-12-01 | 1964-06-16 | Faberge Inc | Encapsulation in natural products |
US3607775A (en) * | 1968-01-29 | 1971-09-21 | Ncr Co | Process for encapsulating minute particles by use of autogenously polymerizable capsule wall material |
CH540715A (de) * | 1970-05-26 | 1973-10-15 | Ciba Geigy Ag | Verfahren zur Einkapselung von in einer Flüssigkeit fein verteilter Substanz |
US3875074A (en) * | 1972-03-06 | 1975-04-01 | Champion Int Corp | Formation of microcapsules by interfacial cross-linking of emulsifier, and microcapsules produced thereby |
US4001140A (en) * | 1974-07-10 | 1977-01-04 | Ncr Corporation | Capsule manufacture |
-
1975
- 1975-11-26 GB GB48616/75A patent/GB1507739A/en not_active Expired
-
1976
- 1976-11-05 IE IE2467/76A patent/IE43877B1/en unknown
- 1976-11-10 AU AU19489/76A patent/AU500603B2/en not_active Expired
- 1976-11-10 ZA ZA00766730A patent/ZA766730B/xx unknown
- 1976-11-10 CA CA265,352A patent/CA1067761A/en not_active Expired
- 1976-11-15 US US05/742,216 patent/US4105823A/en not_active Expired - Lifetime
- 1976-11-16 YU YU02797/76A patent/YU279776A/xx unknown
- 1976-11-17 NO NO763925A patent/NO145975C/no unknown
- 1976-11-18 FR FR7634699A patent/FR2332798A1/fr active Granted
- 1976-11-19 PT PT65863A patent/PT65863B/pt unknown
- 1976-11-20 DE DE2652875A patent/DE2652875C2/de not_active Expired
- 1976-11-22 NL NLAANVRAGE7612964,A patent/NL179707C/xx not_active IP Right Cessation
- 1976-11-24 LU LU76257A patent/LU76257A1/xx unknown
- 1976-11-24 IT IT12899/76A patent/IT1078598B/it active
- 1976-11-25 AT AT873776A patent/AT353751B/de not_active IP Right Cessation
- 1976-11-25 BR BR7607917A patent/BR7607917A/pt unknown
- 1976-11-25 SE SE7613212A patent/SE426212B/sv not_active IP Right Cessation
- 1976-11-25 GR GR52260A patent/GR62016B/el unknown
- 1976-11-26 DK DK533476A patent/DK533476A/da not_active Application Discontinuation
- 1976-11-26 CH CH1494976A patent/CH626270A5/de not_active IP Right Cessation
- 1976-11-26 ES ES453710A patent/ES453710A1/es not_active Expired
- 1976-11-26 JP JP51142121A patent/JPS5266878A/ja active Granted
- 1976-11-26 BE BE172759A patent/BE848813A/xx not_active IP Right Cessation
- 1976-11-26 FI FI763411A patent/FI64898C/fi not_active IP Right Cessation
-
1977
- 1977-02-14 RO RO7789402A patent/RO71467A/ro unknown
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