A glass includes a first surface; and a second surface that is opposite to the first surface, wherein an absorption coefficient of the glass at light of wavelength 550 nm is less than or equal to 1 m.sup.−1, and a ratio (α.sub.max /α.sub.min) of a maximum value α.sub.max (m.sup.−1) to a minimum value α.sub.min (m.sup.−1) of absorption coefficients of the glass at light within a range of wavelengths from 400 nm to 700 nm is less than or equal to 10, and wherein a two-dimensional arithmetical mean height of a selectable area of 1790 μm×1330 μm of the first surface is less than or equal to 1 nm.

A glass includes a first surface; and a second surface that is opposite to the first surface, wherein an absorption coefficient of the glass at light of wavelength 550 nm is less than or equal to 1 m.sup.−1, and a ratio (α.sub.max /α.sub.min) of a maximum value α.sub.max (m.sup.−1) to a minimum value α.sub.min (m.sup.−1) of absorption coefficients of the glass at light within a range of wavelengths from 400 nm to 700 nm is less than or equal to 10, and wherein a two-dimensional arithmetical mean height of a selectable area of 1790 μm×1330 μm of the first surface is less than or equal to 1 nm.

A glass substrate for a high-frequency device, which contains SiO.sub.2 as a main component, the glass substrate having a total content of alkali metal oxides in the range of 0.001-5% in terms of mole percent on the basis of oxides, the alkali metal oxides having a molar ratio represented by Na.sub.2O/(Na.sub.2O+K.sub.2O) in the range of 0.01-0.99, and the glass substrate having a total content of alkaline earth metal oxides in the range of 0.1-13% in terms of mole percent on the basis of oxides, wherein at least one main surface of the glass substrate has a surface roughness of 1.5 nm or less in terms of arithmetic average roughness Ra, and the glass substrate has a dielectric dissipation factor at 35 GHz of 0.007 or less.

A shaped glass article is provided that is ultrathin, has two surfaces and one or more edges joining the two surfaces, and a thickness between the two surfaces. The shaped ultrathin glass article has at least one curved area with a non-vanishing surface curvature with a minimal curvature radius R if no external forces are applied. A method for producing a shaped glass article is also provided that includes providing an ultrathin glass with two surfaces and one or more edges joining the two surfaces, having a thickness between the two surfaces and shaping the ultrathin glass to a shaped ultrathin glass article by forming at least one curved area having a non-vanishing surface curvature with a minimal curvature radius R if no external forces are applied to the shaped ultrathin glass article.

A glass sheet includes a first main surface and a second main surface opposite to the first main surface in a thickness direction. X represented by the following formula (1) is −0.29<X<0.29: A×Δ.sup.1H/.sup.30Si+B×ΔNa.sub.2O+C×ΔSn+D×ΔF=X (1). F.sub.0-3 determined according to the following formula (II) is 0.02 or more: F.sub.0-3=[average fluorine concentration (wt %) by SIMS at depth of 0 to 3 μm in first main surface]×3 (II).

A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.

A thin glass article is provided that has a first face, a second face, one or more edges joining the first and second faces, and a thickness between the first and second faces, where the faces and the one or more edges together form an outer surface of the thin glass article. The thin glass article has an ion-exchanged surface layer on its outer surface. The ion-exchanged surface layer is non-uniform, wherein the non-uniform ion-exchanged surface layer has an associated compressive surface stress which varies between a minimum and a maximum value over the outer surface and/or a depth of layer which varies between a minimum and a maximum value over the outer surface. A method for producing a thin glass article and a use of a thin glass article are also provided.

A glass sheet is a single glass sheet having a first surface and a second surface facing the first surface. The glass sheet has a curvature part curved in a first direction and a second direction orthogonal to the first direction. A radius of curvature in the first direction of the curvature part is 8,500 mm or less. At least a part of the first surface has been chemically strengthened in the curvature part. In the first direction within the chemically strengthened region in the curvature part, an Na amount in the first surface is smaller than the Na amount in the second surface.

A glass sheet is a single glass sheet having a first surface and a second surface facing the first surface. The glass sheet has a curvature part curved in a first direction and a second direction orthogonal to the first direction. A radius of curvature in the first direction of the curvature part is 8,500 mm or less. At least a part of the first surface has been chemically strengthened in the curvature part. In the first direction within the chemically strengthened region in the curvature part, an Na amount in the first surface is smaller than the Na amount in the second surface.

The present invention is based, at least in part, on the identification of a pharmaceutical container formed, at least in part, of a glass composition which exhibits a reduced propensity to delaminate, i.e., a reduced propensity to shed glass particulates. As a result, the presently claimed containers are particularly suited for storage of pharmaceutical compositions and, specifically, a pharmaceutical solution comprising a pharmaceutically active ingredient, for example, RITUXAN (rituximab), AVASTIN (Bevacizumab), LUCENTIS (Ranibizumab) or HERCEPTIN (trastuzumab).