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Official data from INPI

PROCESSO PARA OPERAR UMA CÉLULA OU UMA PLURALIDADE DE CÉLULAS ELETROLÍTICAS PARA OBTENÇÃO DE PERÓXIDO DE HIDROGÊNIO POR REDUÇÃO DE OXIGÊNIO CONTIDO NO AR

Arquivada/ExtintaInvention PatentPCT · US1987001530

Application data

Number

PI8707898

Type

Invention Patent

Filing

06/30/1987

Publication

10/31/1989

PCT

US1987001530

Progress at the INPI

  1. Filing06/30/87
  2. Publication10/31/89
  3. Examination06/12/90
  4. Allowance03/28/95
  5. Grant10/31/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. C. (pessoa física)

US

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Inventors

J. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

932,833 · 11/20/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

10/31/1989

RPI 993

Carta-patente expirada

#21.1

Patente extinta em 30/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/31/1995

RPI 1300

Deferimento

#9.1

03/28/1995

RPI 1269

Exigência - art. 36 da LPI

#6.1

10/25/1994

RPI 1247

Solicitação de exame técnico

#4.1

06/12/1990

RPI 1022

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