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Official data from INPI

PROCESSO PARA A FABRICAÇÃO DE ÁCIDO ARSÊNICO

Em AnáliseInvention Patent

Application data

Number

PI8504324

Type

Invention Patent

Filing

09/09/1985

Publication

04/14/1987

Progress at the INPI

  1. Filing09/09/85
  2. Publication04/14/87
  3. Examination05/30/89
  4. Allowance07/02/91
  5. Grant02/18/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Interox Chemicals Limited, companhia britânica

GB

See this company's full portfolio

Inventors

A. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

10/10/1989

RPI 990

Solicitação de exame técnico

#4.1

05/30/1989

RPI 971

Publicação do pedido de patente

#3.1

04/14/1987

RPI 860

Pedido de patente depositado

#2.1

11/12/1985

RPI 786

Carta-patente expirada

#21.1

Patente extinta em 09/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

02/18/1992

RPI 1107

Notificação para pagamento de retribuição

#13.1

10/29/1991

RPI 1091

Deferimento

#9.1

07/02/1991

RPI 1074

Exigência - art. 36 da LPI

#6.1

01/22/1991

RPI 1051

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