Inventor
Henri Ulrich
Inventor
Northford, CT, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds38%
C07CAcyclic or carbocyclic compounds19%
C07DHeterocyclic compounds16%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium16%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%
C08JWorking-up3%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices3%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management3%
PatentTitleYear
4,339,381'1,3-Alkylene-diazetidine-2,4-diones'19824,217,436'Polyurethane forming compositions'19804,202,946'Fire retardant polyurethanes prepared from hydroxy substituted aminomethanephosphonates'19804,202,779'Mixture of bis(2-hydroxyalkyl) N,N-di(lower alkyl)aminomethanephosphonates with polyols'19804,190,599'Amide-containing diisocyanates and preparation thereof'19804,173,602'Process for preparing spirocyclic phosphorus compounds'19794,154,931'Process for the preparation of cyclic ureas'19794,138,398'Bis-cyclic ureas'19794,123,466'Process for nitrating aromatic hydrocarbons'19784,112,014'O,O\'-Bis(hydroxyalkyl) N,N-di(lower-alkyl)aminomethane phosphonates'19784,092,343'Polymethylene polyphenyl polyisocyanate'19784,051,166'Araliphatic diisocyanates'19774,039,581'Process for the preparation of di(amino phenyl)methanes'19774,039,580'Process for preparing di(aminophenyl)methanes'19774,029,705'Purification process for MDA'19774,028,361'Process for the purification of MDA'19774,010,209'Process'19774,008,275'Process for isolating 4,4\'-diaminodiphenylmethane'19773,983,087'Novel process of reclaiming polyurethane foam'19763,951,922'Process for preparing polyimides from derivatives of phthalic anhydride'19763,947,337'.alpha.,.omega.-Diarylpolyene photosensitizers for sulfonylazide polymers'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1982Patents assigned to UPJOHN CO (21)· patent assignee history
1976–1980Based in Northford, CT, US· patent location history
1976Based in North Branford, CT, US· patent location history
1982Based in Guilford, CT, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UPJOHN CO | 21 | 1976–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Northford, CT, US | 19 | 1976–1980 |
| Guilford, CT, US | 1 | 1982 |
| North Branford, CT, US | 1 | 1976 |