|align = "center" bgcolor = "#C0C0C0"|'''Patent numbers'''
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|rowspan = "35"|3M Innovative Properties Company
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|2000
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6455634 US6455634]</u></font>
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|1993
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5612136 US5612136]</u></font>
|-
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|1993
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5602221 US5602221]</u></font>
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|American Tape Company
|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=4335026 US4335026]</u></font>
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|rowspan = "2"|Minnesota Mining and Manufacturing Company|align = "center"| |align = "center"| |align = "center"| |align = "center"|x|align = "center"| |align = "center"| |align = "center"|x|align = "center"|x|1993|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5602221 US5602221]</u></font>|-|align = "center"| |align = "center"| |align = "center"|x|align = "center"|x|align = "center"| |align = "center"| |align = "center"| |align = "center"|x|1993|<font color="#0000FF"><u>[http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=5612136 US5612136]</u></font>|-
|Nichiban Company Limited
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