IRVING DAVID WEINER
Broker in Sharon, MA
License number
Massachusetts 52488
Issued Date
Jun 1, 1966
Expiration Date
Mar 14, 1999
Type
Broker
Address
Address
Sharon, MA 02067
Professional information
Pressure Transducer With Dual Slope Output
US Patent:
2003012, Jul 3, 2003
Filed:
Dec 21, 2001
Appl. No.:
10/027412
Inventors:
Santhi Mathew - Londonderry NH, US
Kerry Lahey - Litchfield NH, US
Leonid Mindlin - South Natick MA, US
Jim Poulin - Derry NH, US
Claudia Quigley - Lexington MA, US
Gardy St.Paul - Everett MA, US
Irving Weiner - Sharon MA, US
Kerry Lahey - Litchfield NH, US
Leonid Mindlin - South Natick MA, US
Jim Poulin - Derry NH, US
Claudia Quigley - Lexington MA, US
Gardy St.Paul - Everett MA, US
Irving Weiner - Sharon MA, US
International Classification:
G01L009/00
US Classification:
073/753000
Abstract:
A pressure transducer has an output characterized by two or more slopes. A pressure transducer generates an first output signal that may be linearly proportional to the sensed pressure. The pressure transducer includes an electrical circuit that shapes the first output signal to produce a shaped output signal that according to a first function of the first output signal when the first output signal is less than the first value and according to a second function of the first output signal when the first output signal is greater than a second value. Preferably, the shaped output signal is a dual slope signal such that the shaped output signal has a first linear portion characterized by a first slope and a second linear portion characterized by a second slope. The two linear portions of the shaped output signal may intersect at a knee point which corresponds to a pressure between two preferred desired pressure ranges. Preferably, the knee point corresponds to a sensed pressure that is approximately 10 percent of the maximum pressure sensed by the device. The higher slope may correspond to lower measured pressures and the lower slope may correspond to higher measured pressures. Preferably, the higher slope is high enough that even in low output voltage ranges, the shaped output signal can be resolved by an analog-to-digital converter to a desired degree of precision. Preferably, the total range of the output voltage is the same as the total range of the first output voltage.
Gated Baseline Corrector
US Patent:
4237424, Dec 2, 1980
Filed:
Aug 18, 1978
Appl. No.:
5/934939
Inventors:
Irving L. Weiner - Sharon MA
Assignee:
Ortho Diagnostics, Inc. - Raritan NJ
International Classification:
H03L 500
US Classification:
328175
Abstract:
Input pulses are coupled through a delay network to a pulse amplifier. The amplifier includes feedback circuitry for correcting its output to a particular baseline level, generally zero volts. Within the amplifier feedback path is a gate, which is normally closed. Input pulses are also coupled to a pulse detector; whenever an input pulse is detected, the baseline gate in the amplifier feedback path is open, and the dynamic feedback operation is temporarily inhibited. During this time, the most recent previous level of baseline correction is retained.
Methods For Enumerating 3-Part White Cell Differential Clusters
US Patent:
4596035, Jun 17, 1986
Filed:
Jun 27, 1983
Appl. No.:
6/508448
Inventors:
Russell J. Gershman - Middleboro MA
Irving L. Weiner - Sharon MA
Arthur C. Daniels - Canton MA
Irving L. Weiner - Sharon MA
Arthur C. Daniels - Canton MA
Assignee:
Ortho Diagnostic Systems Inc. - Raritan NJ
International Classification:
G01N 3348, G01N 2164, G06K 900
US Classification:
382 6
Abstract:
Methods useful for differentiating and enumerating subpopulations of particles in a sample and more particularly relates to the enumeration of leukocyte subclasses. Enumeration is accomplished by utilizing two light scatter parameters and converting these parameters to a single parameter by employing a mathematical, nonlinear transformation.
Method And Apparatus For Discriminating Red Blood Cells From Platelets
US Patent:
4202625, May 13, 1980
Filed:
Aug 18, 1978
Appl. No.:
5/934938
Inventors:
Irving L. Weiner - Sharon MA
Russell J. Gershman - Middleboro MA
Russell J. Gershman - Middleboro MA
Assignee:
Ortho Diagnostics, Inc. - Raritan NJ
International Classification:
G01N 3316, G01N 1502
US Classification:
356 39
Abstract:
Signals including noise, platelet pulses, and red cell pulses are amplified and compared to a noise threshold. If larger than the threshold, the signals are integrated and the integrated signals are compared to respective red cell and platelet references.