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| Number | Title | Issue Date |
| 8091503 | Label configured to indicate an object reaching a predetermined temperature An apparatus indicates a temperature of an object. The apparatus includes a porous substrate, a mirror image of a first image pattern printed with a first phase-change ink having a first phase change temperature on a first side of the porous substrate, and an adhesi... | 01/10/2012 |
| 7475653 | Sealed-system critical temperature indicator An apparatus that indicates whether an object has been exposed to a predetermined critical temperature T. The apparatus housing has a reservoir portion and a capillary tube portion in fluid connection with the reservoir portion. A first fluid is contained within the... | 01/13/2009 |
| 7429126 | Residual lifetime indicator for perishable consumer products Taught is a residual lifetime indicator for perishable consumer products, comprising a material which displays a property variable with varying temperature in accordance with a given function, actuating means which act on the material so as to make it exhibit the af... | 09/30/2008 |
| 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 |
| 7290450 | Process diagnostics A diagnostic device for use in a industrial process includes monitoring electronics or diagnostic circuitry configured to diagnose or identify a condition or other occurrence in the industrial process. The system can be implemented in a process device such as a flow... | 11/06/2007 |
| 7278369 | Temperature indicator using thermochromic materials A temperature indicator for a rubber article comprises a thermochromic material, wherein the thermochromic material is a component of a rubber article selected from the group consisting of tires, belts and hoses. A rubber article containing a temperature indicator i... | 10/09/2007 |
| 7157048 | Detection of contaminants The present invention relates to a contamination detector associated with a double bar code that includes coded indicia used to identify the presence of conditions indicative of microbial contamination, including toxic contaminants, bacterial metabolites, and other ... | 01/02/2007 |
| 7097353 | Method and device for indicating temperature Disclosed is a temperature indicating method and device. The device embodies a sealed tube containing a liquid and a float. The tube has markings on the exterior indicating temperature zones or, in the alternative, temperature gradients. The method disclosed include... | 08/29/2006 |
| 7080939 | Polymeric thermal history sensor An improved thermal history sensor having multiple polymeric substrates with unique compositions is disclosed. By positioning the sensor adjacent to an item subject to thermal stressors, each of the polymeric substrates react with a different rate of crystallization... | 07/25/2006 |
| 7074280 | Method and system to represent a temperature experienced by a medical device in a medical washing machine A method and system to represent surface temperatures. The method and system represent a surface temperature experienced by a medical device during a washing cycle in a medical washing machine. A temperature strip is positioned proximate a surface of the medical dev... | 07/11/2006 |
| 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 |
| 7002054 | Absorbent article having a fever indicator A wearable article including a fever indicator disposed on at least a portion of the article for indicating the body temperature of a wearer. The fever indicator may be used in conjunction with a disposable absorbent article and provides a signal indicating qualitat... | 02/21/2006 |
| 7002228 | Diffusion barrier for improving the thermal stability of MRAM devices A magnetic random access memory device including a pinned layer having a diffusion barrier, a sense layer, and a tunnel barrier to electrically couple the pinned layer to the sense layer. A method for forming a magnetic random access memory device including forming,... | 02/21/2006 |
| 6993446 | Method and apparatus for predicting the time to failure of electronic devices at high temperatures A method and apparatus are disclosed for determining a time to failure for an electronic device. The method and apparatus includes estimating a dependency of a bond strength degradation rate on at least one parameter and estimating a temperature profile of the elect... | 01/31/2006 |
| 6957693 | Heat exchanger thermal indicator Thermal indictors of this invention are constructed for use with a heat exchanger generally comprising hot and cold side passages for accommodating a desired heat transfer therebetween. The thermal indicator is disposed at least partially within the heat exchanger a... | 10/25/2005 |
| 6951186 | Non-invasive environment history indicator for reusable device In an apparatus including a unit which is recoverable and reusable after use, an environmental history indicator member having a property variable according to an environmental history of use of the apparatus and arranged not to participate in any functions of the a... | 10/04/2005 |
| 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 |
| 6727317 | Transparent plastic articles comprising certain polymeric components to provide temporary and reversible opacity characteristics Unique transparent plastic (preferably though not necessarily polypropylene) articles that can be tailored to become opaque when exposed to a sufficiently high temperature and which returns to substantially the same transparency level upon cooling are provided. Such... | 04/27/2004 |
| 6546892 | Overheating axle warning device An overheating axle warning device comprising a heat sensor device with a neoprene seal which is substituted for a standard rubber filler wheel hub plug. The device can have various colors to identify certain temperature ranges of activation.... | 04/15/2003 |
| 6379036 | Method for measurement of duration of molten state for solder during reflow An instrument and a method for measuring a duration at or above a predetermined temperature, such as a solder reflow temperature, are disclosed. The instrument includes a capillary tube and an indicator material that is solid at temperatures below the pre... | 04/30/2002 |
| 6362303 | Thermoscattering materials and devices Thermally reversible light scattering materials are provided in accordance with the invention including a low melting, polymeric material dispersed in a polymer matrix; a first polymer which upon heating from a temperature below its melting point to a tem... | 03/26/2002 |
| 6305313 | Pop-up temperature indicator for use in a 3-CD type air compressor or similar device A temperature indicator for indicating when a specified temperature has been exceeded in a fluid flow through a conduit. Such conduit having an aperture and the temperature indicator being mountable in such aperture and engagable therewith such that the t... | 10/23/2001 |
| 6289794 | Indicator for proper heating of food and a method for constructing thereof A device and a method are disclosed for indicating the reaching of a temperature within a predetermined temperature range by heated food. The device includes a transparent sealed container including a first compartment containing a first substance and a s... | 09/18/2001 |
| 6231229 | Instrument and method to measure the duration of exposure to temperature by determining the amount of an indicator material An instrument and method for accurately measuring and displaying the length of time that the instrument spends at temperatures between a predetermined first temperature and a predetermined second temperature. The instrument includes a capillary tube, a pl... | 05/15/2001 |
| 6203114 | Temperature indicator for a semi-fluid synthetic grease filled axle A novel temperature probe provides a visual indicator to an operator of when an assembly, such as a vehicle axle, filled with a semi-fluid synthetic grease for lubricating the bearings therein has reached an unsafe temperature during operation. In one emb... | 03/20/2001 |
| 6189479 | Method and apparatus for detecting a temperature increase in an electrical insulator The present invention provides a heat-sensitive warning device and a related method for visually detecting an increase in the temperature of the outer surface of an electrical insulator, which may indicate the unsafe flow of leakage electrical current thr... | 02/20/2001 |
| 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 |
| 6079351 | Wetting indicator for composites The invention relates to a device for obtaining, in the manufacture of a high-strength composite, an indication the reinforcement layer of the composite has been wetted throughout by the matrix material of the composite. The reinforcement layer is of the ... | 06/27/2000 |
| 6029601 | Thawing indication marker for frozen food A thawing indication marker for frozen food is disclosed for determining whether or not a frozen food has been thawed. It comprises a tube of an elastic transparent resin, the tube being bent at its center to form two separate containers. One container co... | 02/29/2000 |
| 5954010 | Temperature sensing device for permanently indicating when a product is exposed to critical temperatures A temperature sensing device for permanently indicating when a product is exposed to ambient temperatures exceeding a maximum permitted temperature of the product for a time period long enough to permanently damage the product. In an exemplary embodiment,... | 09/21/1999 |
| 5924294 | Self-contained device for controlling limit temperature during the transport of perishable foodstuffs Self-contained device and method for determining the variations in temperature regulated temperature enclosures. The device consists of a container comprising a tank connected to a receptacle, the inner spaces of which communicate with one another through... | 07/20/1999 |
| 5918981 | Devices for rapid temperature detection Temperature probes are provided comprising a porous or permeable substrate into which is absorbed at least at the surface a diyne monomer. The absorption is achieved by employing a solution of the diyne monomer in a solvent which is transported by the sol... | 07/06/1999 |
| 5861206 | Premanufactured covering consisting mainly of thermoplastic materials for roads, parking areas, etc The invention relates to a premanufactured covering which mainly consists of a thermoplastic material and which covering is intended for roads, parking areas, etc. The covering has reflective material, friction material or the like on the intended upward ... | 01/19/1999 |
| 5857776 | Method and device for monitoring handling conditions A method and a device for monitoring the handling conditions of at least one object intended to be handled under certain predetermined conditions. The temperature or the temperature as a function of time of at least one object, is monitored to enable it t... | 01/12/1999 |
| 5799606 | Pop-up temperature indicating device A pop-up thermometer having an elongate housing formed with a longitudinally extending bore, first and second internal neck regions, a first internal cavity and a second internal cavity. An indicator rod slidably disposed in the cavity includes a front en... | 09/01/1998 |
| 5795065 | Temperature-time-pressure detector A temperature-time-pressure detecting device for a closed heat treatment zone consists of a sealed discoidal-shaped capsule of substantially transparent material adapted for placement within the zone in a generally vertical position. The capsule is formed... | 08/18/1998 |
| 5779364 | Temperature sensitive device for medicine containers A temperature indicator utilizing waxes, low-temperature melt metals or polymers attached to a support member that will melt to reveal a visible indicia on the support member thereby serving as an indicator that the product container to which the inventio... | 07/14/1998 |
