Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7984687 | Temperature-sensitive indicator To provide a temperature sensitive indicator that is capable of easily control the temperature of the temperature sensitive indicator itself and is not affected by the temperature of a finger when the temperature sensitive indicator is operated. In the temperature s... | 07/26/2011 |
| 7430982 | Printed TTI indicators The present invention relates to time-temperature integrating indicators, also known as TTI indicators, which are easily printable on substrates, such as packaging materials, and to a method for the manufacture of packaging materials comprising printed TTI indicator... | 10/07/2008 |
| 7360946 | Time temperature indicators linked to sensory detection A thermal history indicator comprising a temperature sensitive material, a sensing device, a heat insulating material functioning to buffer the temperature sensitive material against temperature change, and an activation means. The triggering of the activation means... | 04/22/2008 |
| 7290925 | Full history time-temperature indicator system A full-history time-temperature indicator system which is capable of exhibiting a time-temperature dependent and visually detectable chemical reaction, useful for monitoring the time and temperature exposure of food products. The system comprises an immobilized reac... | 11/06/2007 |
| 7063041 | Temperature sensor label A temperature sensitive piece 9 has a waxed layer 7 formed on a colored face 4 of a colored paper 6 having an arbitrary plane shape. The waxed layer 7 is formed of a mixture of a proper amount of viscous material and powdered petro... | 06/20/2006 |
| 7036452 | Thermal history indicators A temperature history indicator means for affixing to goods. A temperature related phase change in a material within the indicator leads to an indication that a high temperature event has occurred. A preferred format has a water-soluble, lipid-insoluble dye immobili... | 05/02/2006 |
| 7011037 | Changed condition indicator A device and method of making a device for indicating a change in condition is disclosed. A first embodiment is a device for indicating a transition from a frozen condition to a thawed condition is disclosed. The device includes a housing and a capsule. A first reac... | 03/14/2006 |
| 6968804 | Device for detecting and quantitatively measuring the exposure of an object to a predetermined temperature for a predetermined duration The inventive device comprises a housing (1) which is configured in the shape of a flat strip comprising an enclosure (6) on one side which projects outwards and contains a material (7) that changes its state or viscosity at a predetermined temp... | 11/29/2005 |
| 6916116 | Time or time-temperature indicating articles Time or time-temperature indicating articles are described comprising a housing enclosing: (a) a first fluid reservoir at least partially filled with a first fluid; (b) a substrate comprising a plurality of channels; (c) a second fluid reservoir in fluid communicati... | 07/12/2005 |
| 6877457 | Irreversible humidity indicator cards An irreversible humidity indicator card comprising an intermediate carrier member containing one or more holes, a clear, water vapor permeable first outer layer secured to the first side of the carrier member, a deliquescent material contained within the holes in th... | 04/12/2005 |
| 6786638 | In-situ standard for temperature indicating labels The temperature indicating surface, typically a label, includes an irreversibly fusible coating which changes from a first appearance to a second appearance in response to exposure to a threshold temperature or rated temperature. An in situ standard is provided by i... | 09/07/2004 |
| 6759965 | Light indicator The invention relates to a light indicator, comprising an indicator element (2) illuminable by a light source (1). The indicator element is manufactured from a substantially transparent material provided with an informative indicator pattern. The indic... | 07/06/2004 |
| 6659036 | Plasma sterilization indicator There is provided a plasma sterilization indicator enabling an accurate detection of the end-point of plasma sterilization. This invention relates to a plasma sterilization indicator comprising a support and, as formed thereon, a color-change layer compri... | 12/09/2003 |
| 6435128 | Time-temperature integrating indicator device with barrier material A time-temperature indicator device provides a visually observable indication of the cumulative thermal exposure of an object. The device includes a substrate having a diffusely light-reflective porous matrix and a backing. The backing includes on its sur... | 08/20/2002 |
| 6378454 | Device for detecting, assessing and signaling thaw of frozen and deep frozen foodstuff The device for detecting, assessing and signaling thawing of deep frozen foodstuff includes a stratified disc (1), which can be applied to the product to be checked, and formed by a first support (3), a second support (7) and impermeable transparent films... | 04/30/2002 |
| 6357383 | Frozen food thaw indicator and method for making the same A defrosting indicator for frozen foods is made from a piece of transparent tape and a layer or multiple layers of absorbent material. The indicator also includes a segment of a frozen ink cartridge of the kind used in ball point pens. The absorbent mater... | 03/19/2002 |
| 6244208 | Time-temperature integrating indicator device with barrier material A time-temperature indicator device provides a visually observable indication of the cumulative thermal exposure of an object. The device includes a substrate having a diffusely light-reflective porous matrix and a backing. The backing includes on its sur... | 06/12/2001 |
| 6176197 | Temperature indicator employing color change A temperature indicator (10) including an elongated piece of tubing (12), a top cap (14), a bottom tip (16), a first media (22) with a first melting point, and a second solid media (24) with a second melting point. Mixing of the first and second media (22... | 01/23/2001 |
| 6103351 | Time and temperature integrating indicator device Time and temperature integrating devices for providing a visually observable indication of cumulative thermal exposure are disclosed comprising (a) a substrate having thereon a thermally sensitive image-forming area comprising a combination of (i) an orga... | 08/15/2000 |
| 6042264 | Time-temperature indicator device and method of manufacture A time-temperature indicator label for measuring the length of time to which a product has been exposed to a temperature above a pre-determined temperature is provided. The period of time of exposure is integrated with the temperature to which the indicat... | 03/28/2000 |
| 5997927 | Indicator, an associated package and associated methods An indicator including an indicator product that is adapted to change visual appearance, an indicator scale in near adjacency to the indicator product including substantially all of the visual appearances that the indicator product can display and a binar... | 12/07/1999 |
| 5723336 | Valved extended time-temperature indicator Provided is a valved extended time-temperature indicator. This indicator comprises a base substrate and two transparent polymeric layers on top of the base substrate in adhesive contact with each other. The indicator further comprises a valve member which... | 03/03/1998 |
| 5709472 | Time-temperature indicator device and method of manufacture A time-temperature indicator label for measuring the length of time to which a product has been exposed to a temperature above a pre-determined temperature is provided. The period of time of exposure is integrated with the temperature to which the indicat... | 01/20/1998 |
| 5667303 | Time-temperature integrating indicator device A selectively activated time-temperature integrating device for providing a visually observable indication of cumulative thermal exposure, in which a viscoelastic material migrates into a diffusely light-reflective porous matrix at a rate which varies wit... | 09/16/1997 |
| 5662419 | Time-temperature monitor and recording device and method for using the same A time-temperature monitor is provided that is adapted for indicating the amount of accumulated time during which the ambient temperature adjacent to the monitor is above a predetermined temperature. The time-temperature monitor comprises a viscous, non-N... | 09/02/1997 |
| 5597238 | Marking element A marking element for indicating whether a pre-defined temperature condition has been maintained. The marking element comprises a first material capable of flowing above a predetermined temperature separated from a second absorbent material by a barrier l... | 01/28/1997 |
| 5476792 | Time-temperature indicator devices A time-temperature indicator device for recording the duration of time over which a temperature has been established above a predetermined temperature, which device includes a dye-compatible polymer composition having a softening point above the predeterm... | 12/19/1995 |
| 5378430 | Steam sterilization process monitor An improved steam sterilization process monitor is disclosed comprising a backing strip, a wicking means in intimate contact with an organic compound mounted on the backing strip and a water vapor rate controlling cover strip. In the preferred embodiment ... | 01/03/1995 |
| 5239942 | Freeze indicator A freeze indicator comprising a frangible ampule containing a liquid which expands upon freezing, a dye soluble in the liquid and a nucleating agent, the nucleating agent and the liquid having substantially similar space groupings, the ampule being enclos... | 08/31/1993 |
| 5181394 | Freeze protective shipping units Disclosed are shipping and/or storage units for containers of liquid compositions, such as solutions of biologically active proteins, which are susceptible to physicochemical change upon freezing. Preferred container holders have double sidewalls and a fr... | 01/26/1993 |
| 5158363 | Steam sterilization indicator A steam sterilization indicator for indicating both exposure to steam and sterilization is provided. The steam sterilization indicator includes a backing member. A tablet formed of a compound having a first melting point and second melting point which is ... | 10/27/1992 |
| 5120137 | Time and temperature indicating device An indicating device for indicating the time and temperature history of an object. The indicating device includes a reservoir containing an indicating material that liquefies at or above a predetermined temperature mounted on a base sheet, a removable bar... | 06/09/1992 |
| 5111768 | Freeze indicator A method is disclosed for substantially eliminating undercooling in a liquid cooled below its freezing point which comprises utilizing a nucleating agent system comprising: (1) a nucleating agent which is a metal compound, insoluble in the liquid, the met... | 05/12/1992 |
| 4846095 | Critical temperature indicating device Device for indicating a critical temperature, such as, for example, the freezing point of a liquid. The device comprises a sheet which is a layer having a multiplicity of micropores therein and a mixture comprising at least two liquids, said mixture incap... | 07/11/1989 |
| 4793717 | Device for visually indicating a pressure or temperature condition Indicating device suitable for visibly indicating conditions such as the application of force or pressure or the exposure to a critical temperature. The device includes a porous pad containing an indicating dyed chemical, a wick maintained in spaced relat... | 12/27/1988 |
| 4743398 | Thermochromic composition A temperature indicating composition is provided for use on recoverable articles so that heating to produce recovery or to activate a heat-activatable sealant can be monitored. The composition comprises a thermochromic colorant in a binder and an activato... | 05/10/1988 |
| 4729671 | Temperature control indicator unit This invention relates to a temperature control indicator unit comprising a substrate having supported thereon (a) microcapsules enclosing a hydrophobic organic compound possessing an arbitrarily selected melting point, (b) a methine dye and (c) an oxidiz... | 03/08/1988 |
| 4469452 | Indicator system and means for irreversibly recording a temperature limit System and means for irreversibly recording the incidence of a predetermined temperature comprising a cholesteric liquid crystal system and an activator material capable of interacting with the liquid crystal system to induce a unique irreversible change ... | 09/04/1984 |
| 4410493 | Indicator device for use in steam sterilization An indicator device which comprises a backing member, an indicator chemical, such as sebacic acid, which has the capability of wicking through a wick material, wicking means having one end of said wicking means in physical contact with said indicator chem... | 10/18/1983 |
| 4362645 | Temperature indicating compositions of matter Novel and stable compositions of matter are disclosed which change color sharply upon a transition from a liquid state to a solid state or from a solid state to a liquid state, which change of state is at substantially a predetermined temperature correspo... | 12/07/1982 |
