Patent JPS5239646A successfully refreshed from Google Patents.
JPS5239646A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
A process for preparing hydroxybenzoic acid diesters
Assignee: Asahi Chemical Industry Co Ltd
•
Filing: 1975-09-25
•
Granted: —
•
Expires: 1995-09-25
Abstract
Abstract PURPOSE: To prepare hydroxybenzoic acid diesters useful as curing agents for epoxy resin, etc., with high purity, by applying a dialkyltin compound as an interesterification catalyst. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Mikio Sato
- 👤 Kiyoshi Ichikawa
- 👤 Katsuyuki Nakamura
- 👤 Yoshio Matsumoto
- 👤 Shunji Matsuo
- 👤 Bunzo Uda
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-27 22:10
CPC Classifications
Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.