DE3890525T1 - TOY WITH THERMOCHROMIC MATERIAL - Google Patents

TOY WITH THERMOCHROMIC MATERIAL

Info

Publication number
DE3890525T1
DE3890525T1 DE19883890525 DE3890525T DE3890525T1 DE 3890525 T1 DE3890525 T1 DE 3890525T1 DE 19883890525 DE19883890525 DE 19883890525 DE 3890525 T DE3890525 T DE 3890525T DE 3890525 T1 DE3890525 T1 DE 3890525T1
Authority
DE
Germany
Prior art keywords
toy
thermochromic material
thermochromic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19883890525
Other languages
German (de)
Inventor
Keith Hippely
R Larry Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mattel Inc
Original Assignee
Mattel Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/067,519 external-priority patent/US4917643A/en
Application filed by Mattel Inc filed Critical Mattel Inc
Publication of DE3890525T1 publication Critical patent/DE3890525T1/en
Withdrawn legal-status Critical Current

Links

DE19883890525 1987-06-26 1988-05-23 TOY WITH THERMOCHROMIC MATERIAL Withdrawn DE3890525T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/067,519 US4917643A (en) 1987-06-26 1987-06-26 Toy vehicle with thermochromic material
PCT/US1988/001635 WO1988010139A1 (en) 1987-06-26 1988-05-23 Toy vehicle with thermochromic material

Publications (1)

Publication Number Publication Date
DE3890525T1 true DE3890525T1 (en) 1989-08-17

Family

ID=26747958

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883890525 Withdrawn DE3890525T1 (en) 1987-06-26 1988-05-23 TOY WITH THERMOCHROMIC MATERIAL

Country Status (1)

Country Link
DE (1) DE3890525T1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028118A (en) * 1972-05-30 1977-06-07 Pilot Ink Co., Ltd. Thermochromic materials
US4425161A (en) * 1980-11-27 1984-01-10 Yutaka Shibahashi Thermochromic materials
US4674985A (en) * 1985-06-24 1987-06-23 Hasbro Bradley, Inc. Toy with encoded identification element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028118A (en) * 1972-05-30 1977-06-07 Pilot Ink Co., Ltd. Thermochromic materials
US4425161A (en) * 1980-11-27 1984-01-10 Yutaka Shibahashi Thermochromic materials
US4674985A (en) * 1985-06-24 1987-06-23 Hasbro Bradley, Inc. Toy with encoded identification element

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8139 Disposal/non-payment of the annual fee