Patents by Inventor Marga Faulstich

Marga Faulstich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4343908
    Abstract: An optical glass having n.sub.D =1.63.+-.(1.5.times.10.sup.-2), v.sub.D =59.5.+-.1.0, a high chemical stability and a low tendency to crystallization is provided, consisting essentially of (in percent. by weight):______________________________________ SiO.sub.2 23-27 B.sub.2 O.sub.3 24-30 SrO 18-31 La.sub.2 O.sub.3 10-16 Al.sub.2 O.sub.3 2-4 BaO 0-10 CaO 0-5 ZnO 0-6 Y.sub.2 O.sub.3 0-5 ZrO.sub.2 0-2 Li.sub.2 O, Na.sub.2 O and/or K.sub.2 O 0-1.5 As.sub.2 O.sub.3 and/or Sb.sub.2 O.sub.3 0-1 F and/or Cl 0-1, ______________________________________wherein the sum of SiO.sub.2 +B.sub.2 O.sub.3 is 50-53, the weight ratio SiO.sub.2 :B.sub.2 O.sub.3 is 0.8-1.0, the sum SrO+BaO is 26-31, and the sum ZnO+La.sub.2 O.sub.3 is 12-17.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: August 10, 1982
    Assignee: Schott Glaswerke
    Inventors: Marga Faulstich, Volmar Geiler
  • Patent number: 4225459
    Abstract: Glass composition ranges are described which permit the introduction of laser activators into fluorphosphate glass with exceptionally high fluorine content while forming glasses of high crystallization stability and permitting the realization of large melt volumes. The high fluorine content imparts to the glasses an exceptionally low nonlinear refractive index n.sub.2 down to O,4 .times.10.sup.-13 esu.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: September 30, 1980
    Assignee: JENAer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Walter Jahn, Georg Krolla, Norbert Neuroth
  • Patent number: 4213786
    Abstract: A glass having a high refractive index, preferably >1.77, and a low specific gravity, preferable .ltoreq.3.8, is provided for utilization as spectacle lenses. The glass consists essentially of 80 mol percent or more of light cationic oxides with the remainder being cationic oxides having a greater molecular weight. It has a high crystallization stability in a viscosity range >200 poises and an expansion coefficient .alpha..times.10.sup.7 between 20.degree.-300.degree. C. of .ltoreq.100. Sufficiently light in weight to be well-suited for use as spectacle lenses, the glass can be continuously produced, as it has no pronounced tendency toward crystallization. The resulting corrective optical lenses have relatively high dioptric values, even with small center and edge thicknesses.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: July 22, 1980
    Assignee: JENAer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Volkmar Geiler, Georg Gliemeroth
  • Patent number: 4213787
    Abstract: Optical glasses having high refractive indexes and low specific gravities are provided for use as both distant and near vision spectacle lenses. The glasses consist essentially of low molecular weight cationic oxides, alkali metal oxides and divalent oxides to promote the crystallization stability of the glass. They have good chemical resistance, chemical hardenability and a thermal expansion coefficient between 93 and 99.times.10.sup.-7 /.degree. C. in the range of 20.degree.-300.degree. C. Optical lenses can be continuously produced due to the high crystallization stability of the glasses and the resultant spectacle lenses have high dioptric values even with thinner edge or center thicknesses.
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: July 22, 1980
    Assignee: JENAer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Volkmar Geiler, Georg Gliemeroth
  • Patent number: 4149896
    Abstract: Glasses are provided which may be made phototropic and which have a thermal coefficient of linear expansion between about 43 and 58.times.10.sup.-7 /.degree. C. and an index of refraction n.sub.d over about 1.60. Such glasses can be employed as near portion glass material in spectacle lens manufacture; thus, such glasses can be fused with known phototropic for portion glass material, for example, of the borosilicate type, to make multifocal glasses useful in spectacle lenses and spectacles.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: April 17, 1979
    Assignee: Jenaer Glaswerk Schott & Gen
    Inventors: Marga Faulstich, Georg Gliemeroth
  • Patent number: 4099834
    Abstract: A glass when in the form of an optical fiber having an optical loss of not more than 150 dB/km, high transparency, a high numerical aperture, and a high flexural strength, said glass being especially suitable for optical fibers and consisting essentially of:SiO.sub.2 : 65 - 75 mol-%; (38 - 46% by weight);R.sub.2 o: 4 - 17 mol-%; (4 - 13% by weight);PbO: 16 - 25 mol-%; (42 - 55% by weight); wherein R.sub.2 O is Na.sub.2 O, K.sub.2 O or Cs.sub.2 O or mixtures thereof, preferably not more than 3.0 mol % Na.sub.2 O, and with the provision that the molar ratio of SiO.sub.2 : PbO is 2.5 - 4.0.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: July 11, 1978
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Norbert Neuroth, Franz Reitmayer, Georg Krolla
  • Patent number: 4076647
    Abstract: An optical glass with a path length independent of temperature comprises between 40 and 55% by weight P.sub.2 O.sub.5, between 40 and 54% by weight BaO and between 6 and 12% by weight Nb.sub.2 O.sub.5. Part of the BaO may be replaced by SrO or CaO. Minor amounts of SiO.sub.2 or B.sub.2 O.sub.3 may be included as may other metal oxides such as ZnO, Sb.sub.2 O.sub.3 and La.sub.2 O.sub.3.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: February 28, 1978
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Franz Reitmayer
  • Patent number: 4066464
    Abstract: Optical, fluorine containing barium borosilicate glasses having an improved varying partial dispersion in the optical positional range of lanthanum crown and lanthanum flint glasses wherein the ratio of SiO.sub.2 with respect to SiO.sub.2 and B.sub.2 O.sub.3 is at least 0.62 and the content of fluorine in said glass is between 2 and 7 grams per 100 cc of said glass.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: January 3, 1978
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Walter Geffcken
  • Patent number: 4022707
    Abstract: A neodymium-doped phosphate laser glass composition having a low threshold for stimulated emission, a negative temperature coefficient of refractive index, high acid resistence and homogeneity even in large structures comprises P.sub.2 O.sub.5, Na.sub.2 O or K.sub.2 O, Al.sub.2 O.sub.3, Nd.sub.2 O.sub.3, and optionally, F or RO, wherein R is Mg, Ba, Ca, Sr or Zn.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: May 10, 1977
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Otto Deutschbein, Marga Faulstich, Norbert Neuroth, Walter Jahn
  • Patent number: 3999996
    Abstract: Glass as near-portion material for fusion with known phototropic far-portion glasses for multifocal spectacle lenses has a linear thermal expansion coefficient between 45 and 58 .times. 10.sup.-.sup.7 /.degree. C, a refractive index of n.sub.d .gtoreq.1.60, a speed of crystallization of less than 0.5 .mu./min., and the following composition:______________________________________ SiO.sub.2 10.0 - 20.0 % by weight B.sub.2 O.sub.3 15.0 - 23.0 % by weight PbO >26.0 - 30.0 % by weight ZnO 3.0 - 5.0 % by weight La.sub.2 O.sub.3 6.0 - 10.0 % by weight Al.sub.2 O.sub.3 12.0 - 17.0 % by weight ZrO.sub.2 0.5 - 3.0 % by weight TiO.sub.2 0.2 - 3.0 % by weight K.sub.2 O 0.1 - 2.0 % by weight Na.sub.2 O 0.1 - 2.0 % by weight Li.sub.2 O 0.1 - 4.0 % by weight ______________________________________With the provision that: ______________________________________ sum of SiO.sub.2 + B.sub.2 O.sub.3 is 30.0 - 40.0 % by weight sum of the alkali oxides is 0.2 - 3.0 % by weight sum of Al.sub.2 O.sub.3 + La.sub.2 O.sub.3 is 19.
    Type: Grant
    Filed: April 27, 1976
    Date of Patent: December 28, 1976
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Georg Gliemeroth
  • Patent number: 3999997
    Abstract: Optical glass with a path length independent of temperature includes SiO.sub.2, B.sub.2 O.sub.3, K.sub.2 O, BaO, ZrO.sub.2, TiO.sub.2, Nb.sub.2 O.sub.5, P.sub.2 O.sub.5 and F in specified percentages by weight, with the sum of the amounts of SiO.sub.2, B.sub.2 O.sub.3 and P.sub.2 O.sub.5 between 38 and 45% by weight and the sum of the amounts of ZrO.sub.2 and TiO.sub.2 between 12 and 27% by weight.
    Type: Grant
    Filed: July 22, 1975
    Date of Patent: December 28, 1976
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventors: Marga Faulstich, Franz Reitmayer
  • Patent number: 3970466
    Abstract: Optical glass, nd = 1.650 .+-. 2 .times. 10.sup..sup.-3 and vd = 55.5 .+-. 1.0, having a high chemical stability and a sufficiently low tendency toward crystallization that it can be manufactured in a continuous tank melting process into gobs, pressed components, and other formed articles as a mass-produced glass, said glass consisting essentially of, in percent by weight:SiO.sub.2 33.0 .+-. 0.5 B.sub.2 O.sub.3 11.6 .+-. 0.5 BaO 36.6 .+-. 1.0 La.sub.2 O.sub.3 14.0 .+-. 2.5 ZrO.sub.2 4.0 .+-. 2.5 As.sub.2 O.sub.3 0 - 0.5. or Sb.sub.2 O.sub.
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: July 20, 1976
    Assignee: Jenaer Glaswerk Schott & Gen.
    Inventor: Marga Faulstich