Methods and apparatus for reducing carbon 14 in living tissue
US5956896A · kind A · utility
Inventors
Key dates
| Filing date | Jul 28, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jul 28, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G9/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for growing plants in an environment having air containing carbon dioxide which is lower in carbon 14 content than under normal ambient conditions. Such plants grown under these conditions have a lower concentration of carbon 14 and therefore their natural radioactivity will be reduced. The process involves controlling of the source of carbon dioxide used by the plants as one derived from carbon compounds of very low carbon 14 content. Such sources include but are not limited to limestone and fossil fuels. Such plant material can be used to make articles traceable to the process, or alternatively certain plants can be grown for human or animal consumption to reduce the overall radioactive body burden of carbon 14.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.