Method for producing glass bubbles
US4693739A · kind A · utility
8Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1985 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Jun 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing glass bubbles, which comprises heating a glass powder containing a gas-blowing agent in an atmosphere containing steam having a partial steam pressure of at least 0.2 atmosphere to foam it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.