Patent details
EP0490681 Title: Additive composition for cement admixture.
Basic Information
- Publication number:
- EP0490681
- PCT Application Number:
- Type:
- European Patent Granted for LU
- Legal Status:
- Lapsed
- Application number:
- EP913115721
- PCT Publication Number:
- First applicant's nationality:
- Translation Language:
- EPO Publication Language:
- English
- English Title of Invention:
- Additive composition for cement admixture.
- French Title of Invention:
- Additif pour mélange de ciment.
- German Title of Invention:
- Zusatzmittel fÜr Zementzusammensetzung.
- SPC Number:
Dates
- Filing date:
- 12/12/1991
- Grant date:
- 30/11/1994
- EP Publication Date:
- 30/11/1994
- PCT Publication Date:
- Claims Translation Received Date:
- Translations Received Date (B1 EP Publication):
- Translations Received Date (B2 EP Publication):
- Translations Received Date (B3 EP Publication):
- Publication date:
- 17/06/1992
- EP B1 Publication Date:
- 30/11/1994
- EP B2 Publication Date:
- EP B3 Publication Date:
- Lapsed date:
- 31/12/1994
- Expiration date:
- 12/12/2011
- Renunciation date:
- Revocation date:
- Annulment date:
Owner
- From:
- 12/12/1991
- Name:
- W.R. GRACE & CO.-CONN.
- Address:
- GRACE PLAZA, AVENUE OF THE AMERICAS 1114, NEW YORK, NEW YORK 10036-7794, United States (US)
Inventor
1
- Name:
- Koyata Hideo
- Address:
- Japan (JP)
2
- Name:
- Tsutsumi Tomoyuki
- Address:
- Japan (JP)
Priority
- Priority Number:
- 401749/90
- Priority Date:
- 12/12/1990
- Priority Country:
- Japan (JP)
Classification
- Main IPC Class:
- C04B 28/02;
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