1
David J Haas, Sandra F Haas: Time indicator having discrete adhesive. Temtec, Weingram & Zall, August 29, 1995: US05446705 (118 worldwide citation)

A time indicator is provided that changes color or produces an image or information after a specific time interval. The time indicator includes a base substrate with colored dye deposited on a first surface; and a substrate having an adhesive on a first surface thereof, the adhesive positioned at di ...


2
Sandra F Haas, David J Haas: Patterned indicators. Temtec, Michael E Zall, February 17, 1998: US05719828 (75 worldwide citation)

A patterned indicator is provided which contains latent information. The patterned indicator includes a first substrate having first and second surfaces, the first surface having a uniform pattern printed of an ink thereon. A second transparent substrate having first and second surfaces is also prov ...


3
Sandra F Haas, David J Haas: Time indicator. Weingram & Zall, October 15, 1991: US05058088 (71 worldwide citation)

A time indicator is provided which includes a first substrate having first and second surfaces and at least two indicia areas on the first surface. A second substrate having first and second surfaces is also provided. A first chemical agent is provided on each of the indicia areas and a second chemi ...


4
David J Haas, Sandra F Haas: Time indicator. Temtec, Michael E Zall, July 27, 1999: US05930206 (60 worldwide citation)

A time indicator comprising a front part and a rear part, the rear part comprising an ink pattern layer overlaying a rear support member. The front part comprises a transparent front support layer, and an opaque adhesive layer having a front ink display surface, the adhesive layer capable of dissolv ...


5
David J Haas, Sandra F Haas: Long term rapid color changing time indicator. Temtec, Michael E Zall, May 27, 1997: US05633835 (57 worldwide citation)

A time indicator that rapidly changes color after a specific time interval is provided. The time indicator includes a base substrate with colored dye deposited on a first surface; a barrier applied over the colored dye; and a substrate having an adhesive on a first surface thereof. The substrate and ...


6
Sandra F Haas, David J Haas: Patterned indicators. Temtec, Michael Zall, January 19, 1999: US05862101 (47 worldwide citation)

A patterned indicator is provided which contains latent information. The patterned indicator includes a first substrate having first and second surfaces, the first surface having a uniform pattern printed of an ink thereon. A second transparent substrate having first and second surfaces is also prov ...


7
David J Haas, Sandra F Haas: Time indicator. Temtec, Michael E Zall, December 16, 1997: US05699326 (46 worldwide citation)

A time indicator comprising a front part and a rear part, the rear part comprising an ink pattern layer overlaying a rear support member. The front part comprises a transparent front support layer, and an opaque adhesive layer having a front ink display surface, the adhesive layer capable of dissolv ...


8
David J Haas, Sandra F Haas: Method for assembly and activation of a reusable security identification badge. S J A Trust, Weingram & Zall, November 15, 1994: US05364132 (41 worldwide citation)

A method of assembly and activation of a reusable self-expiring Security Identification Badge is provided. The Badge includes a base substrate having a void indicia area. Also included is an ink substrate having an expired indicia area of a soluble ink and an adhesive surface. Also included is an ov ...


9
David J Haas, Sandra F Haas: Convention badge. Temtec, Michael E Zall, February 23, 1999: US05873606 (38 worldwide citation)

An identification badge comprises a base coated with an adhesive protected by release paper. This badge is assembled by removing the release paper, placing an identification card into contact with the adhesive, and then attaching a fastener through a slot in the base of the badge. Various fasteners ...


10
David J Haas, Sandra F Haas: Convention badge. Temtec, Michael E Zall, February 3, 1998: US05715215 (27 worldwide citation)

An identification badge comprises a base coated with an adhesive protected by release paper. This badge is assembled by removing the release paper, placing an identification card into contact with the adhesive, and then attaching a fastener through a slot in the base of the badge. Various fasteners ...