John T Schaefer

US Patent:

6523998, Feb 25, 2003

Filed:

Jan 26, 2001

Appl. No.:

09/769320

Inventors:

Robert L. Danley - Collingswood NJ
John W. Schaefer - Wilmington DE

Assignee:

TA Instruments, Inc. - New Castle DE

International Classification:

G01N 100

US Classification:

374 12, 374 32, 374 33, 374 31, 374 10

Abstract:

An improved differential thermal analysis/differential scanning calorimetry (collectively, DSC) assembly with a furnace block assembly having a measurement chamber and a furnace heater. The measurement chamber has a sensor assembly for receiving a sample material and a reference material. The furnace block assembly is coupled to a generally cylindrical cooling flange through a distributed thermal resistor that allows a constrained heat flow between the furnace assembly and cooling flange. The thermal resistor can also withstand the mechanical stresses associated with the differential expansion and contraction of the furnace assembly and cooling flange without permanent deformation of the thermal resistor. The cooling flange can be coupled to various cooling devices, permitting operation of the overall DSC instrument in a variety of temperature regimes for a variety of applications.

US Patent:

7416328, Aug 26, 2008

Filed:

Dec 27, 2005

Appl. No.:

11/317050

Inventors:

Robert L. Danley - Collingswood NJ, US
John W. Schaefer - Wilmington DE, US

Assignee:

Waters Investments Limited - New Castle DE

International Classification:

G01N 25/00
G01K 13/00

US Classification:

374 14, 374141, 374208, 436908, 236 44 C

Abstract:

Systems and methods for minimizing extraneous forces and calculating corrected weights of samples based on buoyancy factors for a thermogravimetric analyzer (TGA). The TGA includes a balance chamber and a furnace configured to heat a sample. A null balance is provided in the balance chamber and is used to measure the sample weight change during heating. The furnace includes a cylinder open at the top to receive a sample. The bottom of the cylinder is closed except for a small hole that allows a thermocouple to pass through. An infrared heat source may be provided to heat the cylinder. The balance chamber can be thermally isolated from the furnace using an actively cooled plate and a system of heat shields disposed between the furnace and balance chamber. A thermocouple disk is further provided to limit gas flow in the furnace and increase reliability of sample weight measurements.

US Patent:

7566167, Jul 28, 2009

Filed:

Feb 4, 2008

Appl. No.:

12/025279

Inventors:

Robert L. Danley - Collingswood NJ, US
John W. Schaefer - Wilmington DE, US

Assignee:

Waters Investments Limited - New Castle DE

International Classification:

G01N 25/00
G01K 13/00

US Classification:

374 14, 374141, 374208, 436908, 236 44 C

Abstract:

Systems and methods for minimizing extraneous forces and calculating corrected weights of samples based on buoyancy factors for a thermogravimetric analyzer (TGA). The TGA includes a balance chamber and a furnace configured to heat a sample. A null balance is provided in the balance chamber and is used to measure the sample weight change during heating. The furnace includes a cylinder open at the top to receive a sample. The bottom of the cylinder is closed except for a small hole that allows a thermocouple to pass through. An infrared heat source may be provided to heat the cylinder. The balance chamber can be thermally isolated from the furnace using an actively cooled plate and a system of heat shields disposed between the furnace and balance chamber. A thermocouple disk is further provided to limit gas flow in the furnace and increase reliability of sample weight measurements.

US Patent:

20130124505, May 16, 2013

Filed:

Nov 16, 2012

Appl. No.:

13/679361

Inventors:

John Schaefer - Ambler PA, US

Assignee:

THINGWORX - Exton PA

International Classification:

G06F 17/30

US Classification:

707722, 707E17014

Abstract:

A method, non-transitory computer readable medium and data management computing apparatus comprising searching across a plurality of different heterogeneous data indexes based on portions of one or more search keywords in response to a received request. A result set for each of the plurality of different heterogeneous data indexes is obtained based on the searching. Further, one or more facets to each of the obtained results sets are added. Furthermore, a plurality of visualization techniques are automatically identified for each of the obtained results sets based on the facets in each of the obtained result sets and a model entity type associated with each of the plurality of different heterogeneous data indexes. Finally, each of the obtained results sets with the added facets and the identified one of the plurality of visualization techniques is provided.

US Patent:

20130124616, May 16, 2013

Filed:

Nov 16, 2012

Appl. No.:

13/678885

Inventors:

John Schaefer - Ambler PA, US

Assignee:

THINGWORX - Exton PA

International Classification:

G06F 15/16

US Classification:

709203

Abstract:

This technology generates a plurality of instances of things each including a dynamically generated interface structure and services associated with and properties of the corresponding one of the things. The services associated with and the properties of one of the plurality of instances of things for a selected one of the plurality of instances of things are retrieved and provided. A service definition for a selected one of the services is retrieved and provided based on the retrieved and provided services associated with and properties for the selected one of the plurality of instances of things. A requested consumption call for the selected one of the services is executed based on the retrieved service definition. A defined result set for the executed consumption call is provided in the dynamically generated interface structure associated with the requested one of the plurality of instances of things.

US Patent:

20130132385, May 23, 2013

Filed:

Nov 16, 2012

Appl. No.:

13/678809

Inventors:

John Schaefer - Ambler PA, US

Assignee:

THINGWORX - Exton PA

International Classification:

G06F 17/30

US Classification:

707736

Abstract:

A method, non-transitory computer readable medium, and data manager computing device comprises retrieving a time series data of a monitored asset based on one or more tags in response to a request. Further, a heterogeneous data based on the one or more tags is retrieved. Furthermore, a cause of an anomaly period in retrieved time series data of the monitored asset is determined based on the retrieved heterogeneous data. Finally, the determined cause of the anomaly period in the time series data in the monitored asset is provided.

US Patent:

58427880, Dec 1, 1998

Filed:

Oct 31, 1997

Appl. No.:

8/962378

Inventors:

Robert L. Danley - Collingswood NJ
John R. Reader - Newark DE
John W. Schaefer - Wilmington DE

Assignee:

TA Instruments, Inc. - New Castle DE

International Classification:

G01N 2520

US Classification:

374 12

Abstract:

A Differential Scanning Calorimeter (DSC) which has constant calorimetric sensitivity over its entire range of operating temperatures from -200. degree. C. to 540. degree. C. The DSC sensor consists of a pair of thin-film Resistance Temperature Detectors (RTDs) which are used to sense the temperature of a sample and the temperature difference between the sample and an inert reference. The RTDs are supplied with an excitation current which varies according to the temperature of the reference to achieve constant calorimetric sensitivity, independent of the operating temperature.

US Patent:

20170242934, Aug 24, 2017

Filed:

Jan 6, 2017

Appl. No.:

15/400230

Inventors:

- Needham MA, US
John Schaefer - Ambler PA, US

International Classification:

G06F 17/30
G06Q 10/06

Abstract:

A method, non-transitory computer readable medium and data management computing apparatus comprising searching across a plurality of different heterogeneous data indexes based on portions of one or more search keywords in response to a received request. A result set for each of the plurality of different heterogeneous data indexes is obtained based on the searching. Further, one or more facets to each of the obtained results sets are added. Furthermore, a plurality of visualization techniques are automatically identified for each of the obtained results sets based on the facets in each of the obtained result sets and a model entity type associated with each of the plurality of different heterogeneous data indexes. Finally, each of the obtained results sets with the added facets and the identified one of the plurality of visualization techniques is provided.