DE1924713C3 - Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen mit einer Dichte von 0,024 bis 0,24 g/24 g/cm↑3↑ mit verdichtetem Kern - Google Patents
Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen mit einer Dichte von 0,024 bis 0,24 g/24 g/cm↑3↑ mit verdichtetem KernInfo
- Publication number
- DE1924713C3 DE1924713C3 DE1924713A DE1924713A DE1924713C3 DE 1924713 C3 DE1924713 C3 DE 1924713C3 DE 1924713 A DE1924713 A DE 1924713A DE 1924713 A DE1924713 A DE 1924713A DE 1924713 C3 DE1924713 C3 DE 1924713C3
- Authority
- DE
- Germany
- Prior art keywords
- foam
- density
- polyurethane
- compressed
- foams
- 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
- 229920005830 Polyurethane Foam Polymers 0.000 title claims description 51
- 239000011496 polyurethane foam Substances 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000006260 foam Substances 0.000 claims description 87
- 239000011148 porous material Substances 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000004604 Blowing Agent Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000005056 polyisocyanate Substances 0.000 claims description 5
- 229920001228 polyisocyanate Polymers 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 24
- 229920002635 polyurethane Polymers 0.000 description 23
- 239000004814 polyurethane Substances 0.000 description 23
- 238000002474 experimental method Methods 0.000 description 20
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 17
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000013459 approach Methods 0.000 description 14
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 229920000728 polyester Polymers 0.000 description 9
- 235000011187 glycerol Nutrition 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 6
- 229940029284 trichlorofluoromethane Drugs 0.000 description 6
- 239000004721 Polyphenylene oxide Substances 0.000 description 5
- JQZRVMZHTADUSY-UHFFFAOYSA-L di(octanoyloxy)tin Chemical compound [Sn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O JQZRVMZHTADUSY-UHFFFAOYSA-L 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920000570 polyether Polymers 0.000 description 5
- 229920005862 polyol Polymers 0.000 description 5
- 150000003077 polyols Chemical class 0.000 description 5
- 238000010924 continuous production Methods 0.000 description 4
- 239000000499 gel Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 235000011037 adipic acid Nutrition 0.000 description 3
- 239000001361 adipic acid Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 2
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 2
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- BFSVOASYOCHEOV-UHFFFAOYSA-N 2-diethylaminoethanol Chemical compound CCN(CC)CCO BFSVOASYOCHEOV-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- SVYKKECYCPFKGB-UHFFFAOYSA-N N,N-dimethylcyclohexylamine Chemical compound CN(C)C1CCCCC1 SVYKKECYCPFKGB-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- FVFJGQJXAWCHIE-UHFFFAOYSA-N [4-(bromomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CBr)C=C1 FVFJGQJXAWCHIE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- JXCHMDATRWUOAP-UHFFFAOYSA-N diisocyanatomethylbenzene Chemical compound O=C=NC(N=C=O)C1=CC=CC=C1 JXCHMDATRWUOAP-UHFFFAOYSA-N 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- TZMQHOJDDMFGQX-UHFFFAOYSA-N hexane-1,1,1-triol Chemical compound CCCCCC(O)(O)O TZMQHOJDDMFGQX-UHFFFAOYSA-N 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Chemical class 0.000 description 1
- 239000002184 metal Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005903 polyol mixture Polymers 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- NESLWCLHZZISNB-UHFFFAOYSA-M sodium phenolate Chemical compound [Na+].[O-]C1=CC=CC=C1 NESLWCLHZZISNB-UHFFFAOYSA-M 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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
- Y10S521/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S521/918—Physical aftertreatment of a cellular product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78024768A | 1968-11-29 | 1968-11-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1924713A1 DE1924713A1 (de) | 1970-07-23 |
| DE1924713B2 DE1924713B2 (de) | 1980-10-09 |
| DE1924713C3 true DE1924713C3 (de) | 1981-09-10 |
Family
ID=25119043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1924713A Expired DE1924713C3 (de) | 1968-11-29 | 1969-05-14 | Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen mit einer Dichte von 0,024 bis 0,24 g/24 g/cm↑3↑ mit verdichtetem Kern |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3506600A (enExample) |
| BE (1) | BE742324A (enExample) |
| CA (1) | CA921668A (enExample) |
| DE (1) | DE1924713C3 (enExample) |
| DK (1) | DK135413B (enExample) |
| FR (1) | FR2024565A1 (enExample) |
| NL (1) | NL164585C (enExample) |
| SE (1) | SE364296B (enExample) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1240649A (en) * | 1969-01-30 | 1971-07-28 | Olin Corp | Polyurethane foams having increased density and process therefor |
| US3607341A (en) * | 1969-11-28 | 1971-09-21 | Gaf Corp | Process for producing a coated substrate |
| US3665918A (en) * | 1970-01-12 | 1972-05-30 | Johnson & Johnson | Conformable adhesive sheet |
| BE789739A (fr) * | 1971-10-05 | 1973-04-05 | Lock Peter M | Pansement chirurgical |
| US3978266A (en) * | 1972-10-05 | 1976-08-31 | Ionics Lyo Products Company | Surgical dressings |
| US3867320A (en) * | 1972-11-29 | 1975-02-18 | Olin Corp | Flame retardant densified polyurethane foam |
| US4134945A (en) * | 1976-11-02 | 1979-01-16 | Olin Corporation | Method and apparatus for making foam |
| USRE32032E (en) * | 1978-02-10 | 1985-11-19 | Foam Cutting Engineers, Inc. | Method of densifying open-celled polyurethane material |
| US4228076A (en) * | 1978-02-10 | 1980-10-14 | Foam Cutting Engineers, Inc. | Method of densifying open-celled polyurethane material |
| US4338072A (en) * | 1978-08-09 | 1982-07-06 | Olin Corporation | Apparatus for crusing partially cured freely risen foam |
| US4344902A (en) * | 1978-08-09 | 1982-08-17 | Olin Corporation | Process for manufacturing flexible densified polymethane foam |
| JPS5624289A (en) * | 1979-07-31 | 1981-03-07 | Furukawa Electric Co Ltd | Adiabatic pipe and its manufacture |
| DE3346441C1 (de) * | 1983-12-22 | 1985-10-17 | Metzeler Kautschuk GmbH, 8000 München | Formwerkzeug zur Herstellung eines Formkörpers aus einem elastomeren Schaum |
| US4950694A (en) * | 1989-06-29 | 1990-08-21 | Union Carbide Chemicals And Plastics Company Inc. | Preparation of polyurethane foams without using inert blowing agents |
| US5100925A (en) * | 1991-03-07 | 1992-03-31 | E. R. Carpenter Company, Inc. | Flexible polyurethane foam having reduced discoloration due to scorch during manufacture |
| US5296182A (en) * | 1992-05-28 | 1994-03-22 | Creme Art Corporation | Method for making formed laminate |
| US5273698A (en) * | 1992-05-28 | 1993-12-28 | Creme Art Corporation | Method for shaping cover materials |
| US5338765A (en) * | 1993-11-23 | 1994-08-16 | Schuller International, Inc. | Method of and apparatus for continuously foaming a polyimide powder |
| US7690096B1 (en) * | 2008-09-19 | 2010-04-06 | Dreamwell, Ltd. | Method of manufacturing an aged mattress assembly |
| AU2009305531A1 (en) | 2008-10-17 | 2010-04-22 | Bioair Solutions, Llc | Filtration media for filtration/purification of a liquid or gas, related reactor modules, filtration devices and methods |
| USD719711S1 (en) | 2013-11-07 | 2014-12-16 | Michael Mozeika, III | Contoured scrubber |
| EP3408085B1 (en) | 2016-01-27 | 2023-09-06 | W. L. Gore & Associates, Inc. | Laminates comprising reinforced aerogel composites |
| EP3801868A1 (en) | 2018-05-31 | 2021-04-14 | Aspen Aerogels Inc. | Fire-class reinforced aerogel compositions |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3012283A (en) * | 1957-07-01 | 1961-12-12 | Mobay Chemical Corp | Shaping polyurethane plastics |
| BE594641A (enExample) * | 1959-09-04 | |||
| GB925249A (en) * | 1960-10-12 | 1963-05-01 | Ici Ltd | Improvements in or relating to the manufacture of cellular materials |
| NL282502A (enExample) * | 1961-09-01 | |||
| US3400196A (en) * | 1964-06-30 | 1968-09-03 | Union Carbide Corp | Method for the permanent compression of a sheet of flexible polyurethane foam |
-
1968
- 1968-11-29 US US780247A patent/US3506600A/en not_active Expired - Lifetime
-
1969
- 1969-05-14 DE DE1924713A patent/DE1924713C3/de not_active Expired
- 1969-11-10 CA CA067097A patent/CA921668A/en not_active Expired
- 1969-11-20 NL NL6917460.A patent/NL164585C/xx not_active IP Right Cessation
- 1969-11-27 SE SE16357/69A patent/SE364296B/xx unknown
- 1969-11-27 BE BE742324D patent/BE742324A/xx unknown
- 1969-11-28 DK DK634369AA patent/DK135413B/da not_active IP Right Cessation
- 1969-11-28 FR FR6941188A patent/FR2024565A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US3506600A (en) | 1970-04-14 |
| FR2024565A1 (en) | 1970-08-28 |
| CA921668A (en) | 1973-02-27 |
| NL164585B (nl) | 1980-08-15 |
| DE1924713A1 (de) | 1970-07-23 |
| NL164585C (nl) | 1981-01-15 |
| SE364296B (enExample) | 1974-02-18 |
| DK135413B (da) | 1977-04-25 |
| DE1924713B2 (de) | 1980-10-09 |
| DK135413C (enExample) | 1977-09-26 |
| BE742324A (enExample) | 1970-05-27 |
| NL6917460A (enExample) | 1970-06-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OGA | New person/name/address of the applicant | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |