NL160659C - Magneto-optische inrichting. - Google Patents

Magneto-optische inrichting.

Info

Publication number
NL160659C
NL160659C NL7200296.A NL7200296A NL160659C NL 160659 C NL160659 C NL 160659C NL 7200296 A NL7200296 A NL 7200296A NL 160659 C NL160659 C NL 160659C
Authority
NL
Netherlands
Prior art keywords
magneto
optical device
optical
Prior art date
Application number
NL7200296.A
Other languages
English (en)
Dutch (nl)
Other versions
NL160659B (nl
NL7200296A (en
Inventor
Piet Frans Dr Bongers
Stefan Dr Wittekoek
Theo Johan August Dr Popma
Original Assignee
Philips Nv
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Nv filed Critical Philips Nv
Priority to NL7200296.A priority Critical patent/NL160659C/xx
Priority to NL7213622A priority patent/NL7213622A/xx
Priority to DE19722262269 priority patent/DE2262269C3/de
Priority to CA160,366A priority patent/CA1003952A/en
Priority to GB73773A priority patent/GB1424861A/en
Priority to US00321331A priority patent/US3838450A/en
Priority to JP48000067A priority patent/JPS5836408B2/ja
Priority to FR7300449A priority patent/FR2167795B1/fr
Publication of NL7200296A publication Critical patent/NL7200296A/xx
Publication of NL160659B publication Critical patent/NL160659B/xx
Application granted granted Critical
Publication of NL160659C publication Critical patent/NL160659C/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2641—Compositions containing one or more ferrites of the group comprising rare earth metals and one or more ferrites of the group comprising alkali metals, alkaline earth metals or lead
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2675—Other ferrites containing rare earth metals, e.g. rare earth ferrite garnets
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10504—Recording
    • G11B11/10508—Recording by modulating only the magnetic field at the transducer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
    • G11B11/10515—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • G11B11/10593—Details for improving read-out properties, e.g. polarisation of light
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Hard Magnetic Materials (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Thin Magnetic Films (AREA)
  • Compounds Of Iron (AREA)
NL7200296.A 1972-01-08 1972-01-08 Magneto-optische inrichting. NL160659C (nl)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL7200296.A NL160659C (nl) 1972-01-08 1972-01-08 Magneto-optische inrichting.
NL7213622A NL7213622A (en) 1972-01-08 1972-10-07 Medium for memory equipment - is bismuth-modified iron garnet, for low curie temp /large kerr effect
DE19722262269 DE2262269C3 (de) 1972-01-08 1972-12-20 Magnetooptische Speichervorrichtung
CA160,366A CA1003952A (en) 1972-01-08 1973-01-02 Thermomagnetic recording and magneto-optical reading in an iron garnet medium
GB73773A GB1424861A (en) 1972-01-08 1973-01-05 Magneto-optical memory device
US00321331A US3838450A (en) 1972-01-08 1973-01-05 Thermomagnetic recording and magneto-optic reading of a medium having bismuth ions in a garnet structure
JP48000067A JPS5836408B2 (ja) 1972-01-08 1973-01-05 ジキコウガクキオクソウチ
FR7300449A FR2167795B1 (pt) 1972-01-08 1973-01-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7200296.A NL160659C (nl) 1972-01-08 1972-01-08 Magneto-optische inrichting.
NL7213622A NL7213622A (en) 1972-01-08 1972-10-07 Medium for memory equipment - is bismuth-modified iron garnet, for low curie temp /large kerr effect

Publications (3)

Publication Number Publication Date
NL7200296A NL7200296A (en) 1973-07-10
NL160659B NL160659B (nl) 1979-06-15
NL160659C true NL160659C (nl) 1979-11-15

Family

ID=26644721

Family Applications (2)

Application Number Title Priority Date Filing Date
NL7200296.A NL160659C (nl) 1972-01-08 1972-01-08 Magneto-optische inrichting.
NL7213622A NL7213622A (en) 1972-01-08 1972-10-07 Medium for memory equipment - is bismuth-modified iron garnet, for low curie temp /large kerr effect

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL7213622A NL7213622A (en) 1972-01-08 1972-10-07 Medium for memory equipment - is bismuth-modified iron garnet, for low curie temp /large kerr effect

Country Status (6)

Country Link
US (1) US3838450A (pt)
JP (1) JPS5836408B2 (pt)
CA (1) CA1003952A (pt)
FR (1) FR2167795B1 (pt)
GB (1) GB1424861A (pt)
NL (2) NL160659C (pt)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1520138A (en) * 1975-10-07 1978-08-02 Philips Electronic Associated Growing single crystal garnets
US4246549A (en) * 1977-10-04 1981-01-20 Sperry Rand Limited Magneto-optical phase-modulating devices
US4195908A (en) * 1978-05-15 1980-04-01 Sperry Corporation Magnetic mirror for imparting non-reciprocal phase shift
JPS56155515A (en) * 1980-05-01 1981-12-01 Olympus Optical Co Ltd Magnetic garnet film and manufacture
NL8203296A (nl) * 1982-08-24 1984-03-16 Philips Nv Magneto-optische inrichting.
CA1212757A (en) * 1982-09-25 1986-10-14 Tsutomu Okamoto Thermomagnetic recording method
NL8203725A (nl) * 1982-09-27 1984-04-16 Philips Nv Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor.
JPS5972707A (ja) * 1982-10-20 1984-04-24 Hitachi Ltd 磁性ガーネット膜
US4833043A (en) * 1983-05-17 1989-05-23 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4569881A (en) * 1983-05-17 1986-02-11 Minnesota Mining And Manufacturing Company Multi-layer amorphous magneto optical recording medium
US4615944A (en) * 1983-05-17 1986-10-07 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4721658A (en) * 1984-04-12 1988-01-26 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4556291A (en) * 1983-08-08 1985-12-03 Xerox Corporation Magneto-optic storage media
DE68920993T2 (de) * 1988-11-08 1995-06-29 Tdk Corp Magnetisches pulver, dessen herstellung und magnetisches speichermedium und magnetisches speicherverfahren.
JPH0766114B2 (ja) * 1988-11-11 1995-07-19 富士電気化学株式会社 磁気光学素子材料
US5344720A (en) * 1991-11-08 1994-09-06 Litton Systems, Inc. Bistable magneto-optic single crystal films and method of producing same utilizing controlled defect introduction
JPH06318517A (ja) * 1993-05-07 1994-11-15 Murata Mfg Co Ltd 静磁波素子用材料
JPH08306531A (ja) * 1995-05-10 1996-11-22 Murata Mfg Co Ltd 静磁波デバイス
US9527776B2 (en) * 2010-11-30 2016-12-27 Skyworks Solutions, Inc. Effective substitutions for rare earth metals in compositions and materials for electronic applications
US8696925B2 (en) * 2010-11-30 2014-04-15 Skyworks Solutions, Inc. Effective substitutions for rare earth metals in compositions and materials for electronic applications
JP5932988B2 (ja) * 2011-06-06 2016-06-08 スカイワークス ソリューションズ, インコーポレイテッドSkyworks Solutions, Inc. 希土類低減ガーネット系および関連のマイクロ波適用例
US9771304B2 (en) * 2015-06-15 2017-09-26 Skyworks Solutions, Inc. Ultra-high dielectric constant garnet
WO2018013499A2 (en) 2016-07-13 2018-01-18 Skyworks Solutions, Inc. Temperature insensitive dielectric constant garnets
WO2020018572A1 (en) 2018-07-18 2020-01-23 Skyworks Solutions, Inc. Magnetic materials with high curie temperatures and dielectric constants

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156651A (en) * 1962-03-28 1964-11-10 Bell Telephone Labor Inc Light transparent ferrimagnetic garnets
US3281363A (en) * 1963-07-10 1966-10-25 Bell Telephone Labor Inc Bismuth-containing garnets and their preparation
US3626114A (en) * 1969-03-10 1971-12-07 California Inst Of Techn Thermomagnetic recording and magneto-optic playback system
US3781905A (en) * 1972-09-22 1973-12-25 Honeywell Inc Optical mass memory

Also Published As

Publication number Publication date
DE2262269A1 (de) 1973-07-12
NL160659B (nl) 1979-06-15
FR2167795A1 (pt) 1973-08-24
US3838450A (en) 1974-09-24
FR2167795B1 (pt) 1978-05-26
JPS5836408B2 (ja) 1983-08-09
DE2262269B2 (de) 1976-09-09
CA1003952A (en) 1977-01-18
JPS4875211A (pt) 1973-10-11
GB1424861A (en) 1976-02-11
NL7213622A (en) 1974-04-09
NL7200296A (en) 1973-07-10

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Legal Events

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VJC Lapsed due to non-payment of the due maintenance fee for the patent or patent application
NL80 Information provided on patent owner name for an already discontinued patent

Owner name: PHILIPS