Glass tube

US11981593B2 · kind B2 · utility

Assignee

• Schott AG · DE

Inventors

• Thomas Lenz · Laatzen, DE
• Andreas Langsdorf · Ingelheim am Rhein, DE
• Fabian Etzold · Darmstadt, DE
• Christoph Gross · Scheinfeld, DE
• Ulrich Lange · Mainz, DE
• Markus Ollig · Weiden, DE
• Arne Riecke · Waldsassen, DE
• Wolfgang Wallat · Klein-Winternheim, DE

Key dates

• Filing date: May 6, 2021
• Grant date: May 14, 2024
• Expiry date: Dec 11, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C3/091
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A glass tube, such as a glass tube for the production of containers for storage of pharmaceutical compositions, facilitates production of pharmaceutical containers with high quality. The glass tube has a relative cross-sectional area deviation defined as is less than k*x+t. QFmax is the highest cross-sectional area and QFmin is the lowest cross-sectional area of at least two cross-sections of the glass tube, the cross-sections being spaced apart from each other along a length of the glass tube, and k is 0.0023 m−1, t is less than 0.15 mm2/m and x is