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For the Inventor, By the Inventor

Long Island City, NY, United States of America

Propper Manufacturing Co., Ltd.


USPTO Granted Patents = 49


Trademarks = 31

Forward Citations = 1,406

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24 inventors (with patents filed for the assignee):

goldMedal Helmut A Heine (19 out of 30 patents)

silverMedal Otto H Schmidt (10 out of 20 patents)

bronzeMedal Thomas A Augurt (10 out of 12 patents)

4.  Helmut W Rosenbusch (10 out of 12 patents)

5.  Irving A Speelman (7 out of 7 patents)

6.  John D Dyckman (4 out of 4 patents)

7.  Jan Raczkowski (4 out of 6 patents)

8.  Joseph Nussenbaum (3 out of 5 patents)

9.  Ken Summer (3 out of 3 patents)

10.  Andrew Zwarun (2 out of 2 patents)

11.  Peter Hunsinger (2 out of 2 patents)

12.  Frank E Platko (2 out of 2 patents)

13.  Werner E Erfurt (2 out of 2 patents)

14.  Dennis Kinney (1 out of 1 patent)

15.  Louise Macaro (1 out of 1 patent)


Core Competencies:
Ophthalmoscope
Sterilization Indicator
Steam Sterilization
Biological Test Pack
Endoscope
Laryngoscope
Sphygmomanometer
Optical Examination Devices
Fecal Occult Blood Test
Illumination System
Adjustable Headband
Disposable Test Device

49 patents:

1. 8262224 - Binocular indirect ophthalmoscope (2012-09-11),
2. 6656429 - Sterilizer vacuum test pack (2003-12-02),
3. 6548248 - DNA sterilization indicator (2003-04-15),
4. 6410336 - Method reagent and kit for the detection of fecal occult blood (2002-06-25),
5. 5563071 - Method, reagent and kit for the detection of fecal occult blood (1996-10-08),
6. 5542905 - Switch mechanism for use in a laryngoscope handle (1996-08-06),
7. 5465124 - Headband with adjustable device for positioning an optical device (1995-11-07),
8. 5447868 - Method, reagent and kit for the detection of fecal occult blood (1995-09-05),
9. 5435971 - Sterilization biological test pack (1995-07-25),
10. 5333018 - Binocular ophthalmoscope (1994-07-26),
11. D347585 - Steam sterilization monitor (1994-06-07),
12. 5217901 - Sterilization biological test pack (1993-06-08),
13. 5200147 - Compact prevacuum steam sterilizer test pack (1993-04-06),
14. 5196964 - Magnifier (1993-03-23),
15. 5158363 - Steam sterilization indicator (1992-10-27),
Propper Manufacturing Co., Ltd. is a leading manufacturer of high-quality medical equipment and supplies. With over 50 years of experience, we have established ourselves as a reliable and trusted provider of products that meet the highest industry standards. Our extensive range of offerings includes surgical instruments, dental instruments, hospital furniture, and much more. We are committed to delivering innovative and reliable solutions to medical professionals around the world. Visit our website to learn more about our products and services.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 16 2025

49 Patents

#2 in Long Island City, NY

#397 in New York

#6,892 in US

#13,850 in the World

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Long Island City, NY, United States of America

Propper Manufacturing Co., Ltd.

Forward Citations = 1,406

24 inventors:

goldMedal Helmut A Heine (19 out of 30 patents)

silverMedal Otto H Schmidt (10 out of 20 patents)

bronzeMedal Thomas A Augurt (10 out of 12 patents)

4.  Helmut W Rosenbusch (10 out of 12 patents)

5.  Irving A Speelman (7 out of 7 patents)

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