CA1265000A - Process for preparing thin film having high light transmittance - Google Patents
Process for preparing thin film having high light transmittanceInfo
- Publication number
- CA1265000A CA1265000A CA000498102A CA498102A CA1265000A CA 1265000 A CA1265000 A CA 1265000A CA 000498102 A CA000498102 A CA 000498102A CA 498102 A CA498102 A CA 498102A CA 1265000 A CA1265000 A CA 1265000A
- Authority
- CA
- Canada
- Prior art keywords
- film
- thin
- coating
- fluoride
- cellulose
- 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 - Lifetime
Links
- 238000002834 transmittance Methods 0.000 title claims abstract description 41
- 239000010409 thin film Substances 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000010408 film Substances 0.000 claims abstract description 114
- 238000000576 coating method Methods 0.000 claims abstract description 45
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 229910001512 metal fluoride Inorganic materials 0.000 claims abstract description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 4
- 239000011247 coating layer Substances 0.000 claims description 28
- 239000010410 layer Substances 0.000 claims description 27
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 21
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 20
- 229920001220 nitrocellulos Polymers 0.000 claims description 19
- 239000000020 Nitrocellulose Substances 0.000 claims description 18
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 claims description 11
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 7
- 229920002301 cellulose acetate Polymers 0.000 claims description 6
- 238000007740 vapor deposition Methods 0.000 claims description 6
- KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 claims description 5
- DQEFEBPAPFSJLV-UHFFFAOYSA-N Cellulose propionate Chemical compound CCC(=O)OCC1OC(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C1OC1C(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C(COC(=O)CC)O1 DQEFEBPAPFSJLV-UHFFFAOYSA-N 0.000 claims description 5
- 229920006217 cellulose acetate butyrate Polymers 0.000 claims description 5
- 229920006218 cellulose propionate Polymers 0.000 claims description 5
- 229920008347 Cellulose acetate propionate Polymers 0.000 claims description 4
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 claims description 4
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 4
- 230000005855 radiation Effects 0.000 claims description 4
- 235000013024 sodium fluoride Nutrition 0.000 claims description 3
- 239000011775 sodium fluoride Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000000428 dust Substances 0.000 description 16
- 229920002678 cellulose Polymers 0.000 description 10
- 239000001913 cellulose Substances 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000001771 vacuum deposition Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- AVMNFQHJOOYCAP-UHFFFAOYSA-N acetic acid;propanoic acid Chemical compound CC(O)=O.CCC(O)=O AVMNFQHJOOYCAP-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- UOACKFBJUYNSLK-XRKIENNPSA-N Estradiol Cypionate Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H](C4=CC=C(O)C=C4CC3)CC[C@@]21C)C(=O)CCC1CCCC1 UOACKFBJUYNSLK-XRKIENNPSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/62—Pellicles, e.g. pellicle assemblies, e.g. having membrane on support frame; Preparation 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/0694—Halides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Surface Treatment Of Optical Elements (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000498102A CA1265000A (en) | 1985-08-09 | 1985-12-19 | Process for preparing thin film having high light transmittance |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60175249A JPS6235359A (ja) | 1985-08-09 | 1985-08-09 | コ−テツド薄膜の製造法 |
| JP175249/85 | 1985-08-09 | ||
| CA000498102A CA1265000A (en) | 1985-08-09 | 1985-12-19 | Process for preparing thin film having high light transmittance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA1265000C CA1265000C (en) | 1990-01-30 |
| CA1265000A true CA1265000A (en) | 1990-01-30 |
Family
ID=15992863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000498102A Expired - Lifetime CA1265000A (en) | 1985-08-09 | 1985-12-19 | Process for preparing thin film having high light transmittance |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4748050A (en, 2012) |
| JP (1) | JPS6235359A (en, 2012) |
| KR (1) | KR910005878B1 (en, 2012) |
| CA (1) | CA1265000A (en, 2012) |
| DE (1) | DE3601827A1 (en, 2012) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01133052A (ja) * | 1987-11-18 | 1989-05-25 | Mitsui Petrochem Ind Ltd | 防塵膜 |
| CA1330860C (en) * | 1987-10-26 | 1994-07-26 | Muneyuki Matsumoto | Dust-proof film |
| JPH01144636A (ja) * | 1987-11-17 | 1989-06-06 | Mitsubishi Electric Corp | 半導体製造装置 |
| JPH0262542A (ja) * | 1988-08-29 | 1990-03-02 | Shin Etsu Chem Co Ltd | エキシマレーザーリソグラフィー用ペリクル |
| US5339197A (en) * | 1989-03-31 | 1994-08-16 | Yen Yung Tsai | Optical pellicle with controlled transmission peaking |
| DE4139959A1 (de) * | 1991-12-04 | 1993-06-09 | Bayerische Motoren Werke Ag, 8000 Muenchen, De | Elektrisch beheizbare, flexible und transparente scheibe |
| US5741576A (en) * | 1995-09-06 | 1998-04-21 | Inko Industrial Corporation | Optical pellicle with controlled transmission peaks and anti-reflective coatings |
| JP2786845B2 (ja) * | 1996-10-03 | 1998-08-13 | 三井化学株式会社 | フォトマスク保護用防塵膜 |
| JP4779211B2 (ja) * | 2001-02-14 | 2011-09-28 | コニカミノルタホールディングス株式会社 | セルロースエステルフィルムの製造方法 |
| EP1872652A1 (en) * | 2005-03-14 | 2008-01-02 | Nippon Sheet Glass Company Limited | Greenhouse, method for growing plant by using greenhouse, and light-transmitting board |
| JP4728072B2 (ja) * | 2005-09-05 | 2011-07-20 | シャープ株式会社 | 電気泳動装置および装置構成器具 |
| JP4734065B2 (ja) * | 2005-09-05 | 2011-07-27 | シャープ株式会社 | 電気泳動装置および装置構成器具 |
| CN102443763B (zh) * | 2010-10-15 | 2015-03-11 | 鸿富锦精密工业（深圳）有限公司 | 具有抗指纹涂层的被覆件及其制备方法 |
| CN114787666A (zh) * | 2019-12-02 | 2022-07-22 | 日本轻金属株式会社 | 光学构件及其制造方法 |
| CN112126103B (zh) * | 2020-08-24 | 2022-11-22 | 浙江长宇新材料股份有限公司 | 一种金属蒸镀复合纳米纤维素膜集流体及其制备方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2207656A (en) * | 1938-12-27 | 1940-07-09 | Research Corp | Process of decreasing reflection of light from surfaces, and articles so produced |
| US2466119A (en) * | 1944-11-06 | 1949-04-05 | American Optical Corp | Reflection modifying coatings and articles so coated and method of making the same |
| US2628921A (en) * | 1949-04-18 | 1953-02-17 | Libbey Owens Ford Glass Co | Method of producing an intermediate metallic oxide film in a multiple layer articles |
| US2758948A (en) * | 1953-02-02 | 1956-08-14 | Lockheed Aircraft Corp | Method of forming a light-transparent electrically conductive coating on a surface and article formed thereby |
| US3356522A (en) * | 1964-02-10 | 1967-12-05 | Mc Donnell Douglas Corp | Polycarbonate film containing an antireflection coating |
| US3475192A (en) * | 1966-09-27 | 1969-10-28 | Engelhard Ind Inc | Method of coating substrate with metallic fluoride films |
| US3958042A (en) * | 1971-04-05 | 1976-05-18 | Agency Of Industrial Science & Technology | Method for manufacture of reflection-proof film |
| US3944440A (en) * | 1972-05-12 | 1976-03-16 | Ppg Industries, Inc. | Selective reflecting metal/metal oxide coatings using surfactant to promote uniform oxidation |
| CH625054A5 (en, 2012) * | 1976-12-27 | 1981-08-31 | Balzers Hochvakuum | |
| US4252843A (en) * | 1977-02-18 | 1981-02-24 | Minnesota Mining And Manufacturing Company | Process for forming a microstructured transmission and reflectance modifying coating |
| JPS5547381A (en) * | 1978-09-29 | 1980-04-03 | Fujitsu Ltd | Plasma etching method |
-
1985
- 1985-08-09 JP JP60175249A patent/JPS6235359A/ja active Pending
- 1985-12-02 KR KR1019850009008A patent/KR910005878B1/ko not_active Expired
- 1985-12-06 US US06/806,145 patent/US4748050A/en not_active Expired - Fee Related
- 1985-12-19 CA CA000498102A patent/CA1265000A/en not_active Expired - Lifetime
-
1986
- 1986-01-22 DE DE19863601827 patent/DE3601827A1/de active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US4748050A (en) | 1988-05-31 |
| KR910005878B1 (ko) | 1991-08-06 |
| JPS6235359A (ja) | 1987-02-16 |
| DE3601827A1 (de) | 1987-02-12 |
| DE3601827C2 (en, 2012) | 1989-11-16 |
| CA1265000C (en) | 1990-01-30 |
| KR870002478A (ko) | 1987-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |