Inventor
Stephen A. Wald
Inventor
Sudbury, MA, US
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds18%
A61KPreparations for medical, dental or toiletry purposes8%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations8%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium8%
C12NMicroorganisms or enzymes8%
C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%
C07DHeterocyclic compounds6%
B01DSeparation4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
PatentTitleYear
9,884,813'Pharmaceutically acceptable salts of B-guanidinopropionic acid with improved properties and uses thereof'20186,627,646'Norastemizole polymorphs'20036,268,533'Formoterol process'20016,147,077'2R,4S-hydroxyitraconazole isomers'20006,040,344'Formoterol process'20006,025,177'Asymmetric grignard synthesis with cyclic 1,2 aminoalcohols'20006,013,830'Asymmetric grignard synthesis with cyclic 1,2 aminoalcohols'20005,198,568'Compounds useful in enzymatic resolution systems and their preparation'19935,196,568'Compounds useful in enzymatic resolution systems and their preparation'19935,077,217'Method for membrane reactor resolution of stereoisomers'19915,057,427'Method for resolution of stereoisomers'19914,350,727'Synergistic textile composite'19824,257,791'Filter'19814,164,400'Filters'19794,132,821'Textile fabric with leather-like appearance'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979Patents assigned to SCOTT CHATHAM (1)· patent assignee history
1979Patents assigned to SCOTT CHATHAM COMPANY (1)· patent assignee history
1979–1982Based in Winston-Salem, NC, US· patent location history
1981–1982Patents assigned to LYDALL INC (2)· patent assignee history
1991–2003Patents assigned to SEPRACOR INC (10)· patent assignee history
1991–1993Based in Wayland, MA, US· patent location history
2000–2003Based in Sudbury, MA, US· patent location history
2018Patents assigned to RGENIX INC (1)· patent assignee history
2018Based in Valley Cottage, NY, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEPRACOR INC | 10 | 1991–2003 |
| LYDALL INC | 2 | 1981–1982 |
| RGENIX INC | 1 | 2018 |
| SCOTT CHATHAM | 1 | 1979 |
| SCOTT CHATHAM COMPANY | 1 | 1979 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sudbury, Massachusetts, US | 6 | 2000–2003 |
| Wayland, Massachusetts, US | 4 | 1991–1993 |
| Winston-Salem, NC, US | 4 | 1979–1982 |
| Valley Cottage, New York, US | 1 | 2018 |