Process for the preservation of wood products
US4668539A · kind A · utility
2Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Dec 30, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K5/04
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention relates to improvements in impregnated wood preserving processes utilizing naphthalene containing preservative agents comprising recovering that portion of the naphthalene stripped from the preservative agent during a drying phase in the process and returning said recovered naphthalene portion to the impregnation phase of said process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.