FR2072820A5 - - Google Patents

Info

Publication number
FR2072820A5
FR2072820A5 FR7043437A FR7043437A FR2072820A5 FR 2072820 A5 FR2072820 A5 FR 2072820A5 FR 7043437 A FR7043437 A FR 7043437A FR 7043437 A FR7043437 A FR 7043437A FR 2072820 A5 FR2072820 A5 FR 2072820A5
Authority
FR
France
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
Application number
FR7043437A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilkington Group Ltd
Original Assignee
Pilkington Brothers Ltd
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 Pilkington Brothers Ltd filed Critical Pilkington Brothers Ltd
Application granted granted Critical
Publication of FR2072820A5 publication Critical patent/FR2072820A5/fr
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)
FR7043437A 1969-12-09 1970-12-03 Expired FR2072820A5 (cs)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6011669A GB1299879A (en) 1969-12-09 1969-12-09 Improvements in or relating to glass compositions

Publications (1)

Publication Number Publication Date
FR2072820A5 true FR2072820A5 (cs) 1971-09-24

Family

ID=10485038

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7043437A Expired FR2072820A5 (cs) 1969-12-09 1970-12-03

Country Status (3)

Country Link
DE (1) DE2057706A1 (cs)
FR (1) FR2072820A5 (cs)
GB (1) GB1299879A (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5263920A (en) * 1975-11-25 1977-05-26 Nippon Chemical Ind Optical glass

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5214607A (en) * 1975-07-24 1977-02-03 Obara Optical Glass Optical glass not containing thorium
JP3750984B2 (ja) * 2000-05-31 2006-03-01 Ｈｏｙａ株式会社 光学ガラスおよび光学製品の製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5263920A (en) * 1975-11-25 1977-05-26 Nippon Chemical Ind Optical glass
JPS542646B2 (cs) * 1975-11-25 1979-02-10

Also Published As

Publication number Publication date
DE2057706A1 (de) 1971-06-09
GB1299879A (en) 1972-12-13

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Legal Events

Date Code Title Description
ST Notification of lapse