Expanding thermoplastic resin beads with very high frequency energy
US5128073A · kind A · utility
21Cited by
6References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1989 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Oct 26, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/224
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Expandable thermoplastic resin beads coated with a novel very high frequency energy absorbing material are expanded with microwave energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.