LexDanaLexDanabeta
Inventor

Tsugio Maeshima

Inventor
Saitama, JP

Overview

11→
Patents
1977–1993
Patent span
Performing operations
Primary field (CPC B)

Patents· 11 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry43%
C01BNon-metallic elements29%
B01DSeparation14%
C07CAcyclic or carbocyclic compounds10%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%
PatentTitleYear
5,217,699'Calcium-phosphate type hydroxyapatite'19935,098,894'Binderless zeolite catalysts, production thereof and catalytic reaction therewith'19925,082,566'Calcium-phosphate type hydroxyapatite for chromatographic separation and process for producing same'19924,977,120'Binderless zeolite catalysts, production thereof and catalytic reaction therewith'19904,794,171'Calcium-phosphate type hydroxyapatite and process for producing same'19884,781,904'Calcium-phosphate type hydroxyapatite for chromatographic separation and process for producing same'19884,513,166'Process for the low polymerization of isobutene'19854,454,367'Process for the low polymerization of isobutene'19844,104,361'Catalyst for reduction of nitrogen oxides and process for preparing the same'19784,052,337'Catalyst for reduction of nitrogen oxides and process for preparing same'19774,046,888'Methods for catalytic reduction of nitrogen oxides'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1993Patents assigned to TOA NENRYO KOGYO KK (10)· patent assignee history
1977–1978Based in Ohi, JP· patent location history
1978Patents assigned to EXXON RESEARCH ENGINEERING CO (1)· patent assignee history
1984Based in Iruma, JP· patent location history
1985–1993Based in Saitama, JP· patent location history
1988–1992Patents assigned to ASAHI OPTICAL CO LTD (2)· patent assignee history
1993Patents assigned to ASHAIKOGAKU KOGYO KABUSHIKI KA (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOA NENRYO KOGYO KK101977–1993
ASAHI OPTICAL CO LTD21988–1992
ASHAIKOGAKU KOGYO KABUSHIKI KA11993
EXXON RESEARCH ENGINEERING CO11978
Locations
LocationPatentsSpan
Saitama, JP71985–1993
Ohi, JP31977–1978
Iruma, JP11984