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Official data from INPI

CERÂMICA DE NITRETO DE SILÍCIO AUTO-REFORÇADA DE ALTA TENSÃO DE FRATURA E UM MÉTODO PARA PREPARÁ-LA

ArquivadaInvention PatentPCT · US1989000324

Application data

Number

PI8905291

Type

Invention Patent

Filing

01/26/1989

Publication

08/21/1990

PCT

US1989000324

Progress at the INPI

  1. Filing01/26/89
  2. Publication08/21/90
  3. Abandoned10/01/91
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 04/09/1996. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

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Inventors

B. D. (pessoa física)

D. J. (pessoa física)

P. J. (pessoa física)

R. E. (pessoa física)

S. B. (pessoa física)

Technical data

IPC Classification

Priority claims

US

148.748 · 01/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

04/09/1996

RPI 1323

Exigência - art. 36 da LPI

#6.1

07/18/1995

RPI 1285

Solicitação de exame técnico

#4.1

10/01/1991

RPI 1087

Notificação de entrada na fase nacional - PCT

#1.3

08/21/1990

RPI 1029

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