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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE UM PRODUTO DE PERIDRATO DE CARBONATO DE SÓDIO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005468

Type

Invention Patent

Filing

10/29/1990

Publication

09/17/1991

Progress at the INPI

  1. Filing10/29/90
  2. Publication09/17/91
  3. Examination11/23/93
  4. Allowance05/05/98
  5. Grant11/24/98
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. C. (pessoa física)

US

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Inventors

C. J. (pessoa física)

US

H. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

428.729 · 10/30/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 29/10/2010

05/21/2013

RPI 2211

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

05/05/1998

RPI 1428

Exigência - art. 36 da LPI

#6.1

07/02/1996

RPI 1335

Solicitação de exame técnico

#4.1

11/23/1993

RPI 1199

Publicação do pedido de patente

#3.1

09/17/1991

RPI 1085

Pedido de patente depositado

#2.1

04/30/1991

RPI 1065

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