Inventor

Yen-Yau H. Chao

Inventor

Harleysville, PA, US

Overview

9→

Patents

1983–2020

Patent span

Chemistry

Primary field (CPC C)

Patents· 9 as inventor

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

C04Bprimary

C04BLime, magnesia29%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form10%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%

C08LCompositions of macromolecular compounds10%

A01NPreservation of bodies of humans or animals or plants or parts thereof5%

A62DChemical means for extinguishing fires or for combating or protecting against harmful chemical agents5%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium5%

C09JAdhesives5%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

C11DDetergent compositions5%

PatentTitleYear

10,730,795Aqueous foam carrier and method of making the same2020 10,252,942Fiber containing aqueous foam composite, the process and use2019 6,602,924'Foamed gypsum compositions'2003 5,696,174'Stable and water-resistant aqueous foam composition'1997 5,110,839'Foamed cementitious compositions comprising low water and poly(carboxylic)acid stabilizer'1992 5,109,030'Foamed hydraulic compositions containing copolymeric foam stabilizers'1992 4,740,536'Water-based binder, coating and adhesive compositions from alkaline-curable latex polymers, epoxies and amines'1988 4,636,546'Process for preparing modified polymer emulsion adhesives'1987 4,394,316'Copper modified mancozeb'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1992Patents assigned to ROHM & HAAS (5)· patent assignee history

1983Based in North Wales, PA, US· patent location history

1987–2020Based in Harleysville, PA, US· patent location history

1988Based in Collegeville, PA, US· patent location history

1997–2020Patents assigned to ALLIED FOAM TECH CORP (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ROHM & HAAS	5	1983–1992
ALLIED FOAM TECH CORP	3	1997–2020

Locations

Location	Patents	Span
Harleysville, Pennsylvania, US	7	1987–2020
Collegeville, Pennsylvania, US	1	1988
North Wales, Pennsylvania, US	1	1983