Method and apparatus for changing physical and chemical properties of materials
US4758003A · kind A · utility
25Cited by
18References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1984 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Sep 6, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S277/934
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for sealing a port in a wall through which an element is passed, comprising the steps of combining a water based fire-resistant liquid sealing material and a solid water absorbing means which will swell to prevent shrinkage to form a mixture that seals, and introducing the mixture into the port to seal the port. Materials and compositions for carrying out the method are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.