http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0425498-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b13952a053c21804b1adee90e501276c |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B43K8-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A63H33-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-132 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-124 |
| filingDate | 1990-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50f44116f1f6bc95ac9ae08e5424550b |
| publicationDate | 1992-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0425498-A |
| titleOfInvention | Writing instrument |
| abstract | PURPOSE: To permit the color-producing agent containing an alkaline pH indicator to be colored or decolored repeatedly a number of times and reduce the time required for its decoloring substantially by specifying the components and amount of a color-producing auxiliary freely receivable in an removable from a container. n CONSTITUTION: A writing instrument consists of a container, which contains freely removably a color-producing auxiliary adapted to react with the color- producing agent containing an alkaline pH indicator to change the color- producing agent from a practically invisible colorless state to a visible coloration and, to which an adsorbing agent consisting of active carbon is added. The color-producing auxiliary contains in water 4-20wt.% 2-dimethylaminoethal, 0.05-3wt.% citric acid and 0.05-3wt.% sodium chloride. The writing instrument 1 is a pen-like container 2 containing the color-producing auxiliary and the adsorbing agent. The color-producing auxiliary is removed from the container making use of a capillary phenomenon of a felt-like pen point 3 provided at the end of the container 2 and applied to the letters or the like printed on a sheet in an invisible ink to cause the coloration thereof to take place. n COPYRIGHT: (C)1992,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2005344003-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003072278-A |
| priorityDate | 1990-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.