| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ee3552d15412fdb6041617ccd8af1c8e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D491-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D405-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-101 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-04 |
| filingDate |
2005-02-09^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c6746a1d2d54fedd1758c985d3163ca0 |
| publicationDate |
2006-11-22^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1723208-A1 |
| titleOfInvention |
Reversible piezochromic systems |
| abstract |
The present invention provides a reversible piezochromic system that gives high contrast images upon an application of pressure to the system. The system has a short color-reversal time and can be prepared inexpensively by admixing a suitable electron donating compound and a suitable electron accepting compound. The reversible piezochromic systems of the present invention are useful for preparing a printing ink that can be used to print, for example, banknotes, to prevent forgeries. |
| priorityDate |
2004-03-12^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |