The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 31, 1983

Filed:

Aug. 31, 1981
Applicant:
Inventor:

Hiroshi Motobayashi, Tokyo, JP;

Assignee:

Terumo Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
422 56 ; 435 28 ; 436 66 ; 436904 ;
Abstract

In a test piece for the detection of occult blood, obtained by impregnating a substrate with an organic peroxide, a chromogen, a buffer, and a stabilizer, at least one compound selected from the group of compounds represented by the general formula I: ##STR1## wherein, m denotes an integer of the value of 1 to 5, R.sup.1 denotes one member selected from the group consisting of methyl group, lower alkoxy group, halogen atoms, and hydrogen atom, and X denotes one group selected from the group consisting of ##STR2## where, R.sup.2 and R.sup.3 each denote an alkyl group having 1 or 2 carbon atoms, ##STR3## where, m, R.sup.1, R.sup.2, and R.sup.3 are as defined above, R.sup.4 denotes an alkylene group having 1 to 6 carbon atoms, and n is 0 or 1, ##STR4## where, m, R.sup.1, R.sup.4 are as defined above, and ##STR5## where, R.sup.2 and R.sup.3 are as defined above.


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