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For the Inventor, By the Inventor

Marlborough, MA, United States of America

Seprachem, Inc.


USPTO Granted Patents = 2

Forward Citations = 4

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3 inventors (with patents filed for the assignee):

goldMedal Charles M Zepp (2 out of 57 patents)

silverMedal Donald L Heefner (2 out of 13 patents)

bronzeMedal Richard F Rossi (2 out of 11 patents)


2 patents:

1. 5658796 - Optical resolution of alkyl chroman-2-carboxylates (1997-08-19),
2. 5529929 - Optical resolution of alkyl 1,4-benzodioxan-2-carboxylates using (1996-06-25),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#98 in Marlborough, MA

#4,925 in Massachusetts

#94,730 in US

Marlborough, MA (US)
Marlborough, MA, United States of America

Seprachem, Inc.

Forward Citations = 4

3 inventors:

goldMedal Charles M Zepp (2 out of 57 patents)

silverMedal Donald L Heefner (2 out of 13 patents)

bronzeMedal Richard F Rossi (2 out of 11 patents)

Please report any incorrect information to [email protected]
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