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Official data from INPI

PROCESSO DE FABRICACAO DE BOEHMITA E PSEUDO - BOEHMITA ULTRA - PURAS, BOEHMITAS E PSEUDO - BOHMITAS, E PRODUTOS A BASE DE ALUMINA OBTIDOS POR SECAGEM DAS BOEHMITAS E PSEUDO - BOEHMITAS

ConcedidaInvention Patent

Application data

Number

PI8300431

Type

Invention Patent

Filing

01/29/1982

Publication

11/01/1983

Progress at the INPI

  1. Filing01/29/82
  2. Publication11/01/83
  3. Examination10/08/85
  4. Allowance09/06/88
  5. Grant05/30/89
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

RHONE POULENC SPEC CHIM [FR]

Inventors

T. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/30/1989

RPI 971

Notificação para pagamento de retribuição

#13.1

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Exigência - art. 36 da LPI

#6.1

12/08/1987

RPI 894

6.2

11/18/1986

RPI 839

Solicitação de exame técnico

#4.1

10/08/1985

RPI 781

Publicação do pedido de patente

#3.1

11/01/1983

RPI 680

Pedido de patente depositado

#2.1

03/15/1983

RPI 647

Carta-patente expirada

#21.1

Patente extinta em 28/01/98

08/19/2008

RPI 1963

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