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Official data from INPI

PROCESSO DE PURIFICAR UM PRODUTO DE CLORETO DE ORGANOSULFONILA LÍQUIDO BRUTO.

Em AnáliseInvention Patent

Application data

Number

PI8504462

Type

Invention Patent

Filing

09/13/1985

Publication

04/22/1987

Progress at the INPI

  1. Filing09/13/85
  2. Publication04/22/87
  3. Examination04/04/89
  4. Allowance03/02/93
  5. Grant08/31/93
  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: 04/04/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atochem North America, Inc.

US

See this company's full portfolio

Inventors

P. J. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/04/1989

RPI 963

Publicação do pedido de patente

#3.1

04/22/1987

RPI 861

Pedido de patente depositado

#2.1

11/19/1985

RPI 787

Carta-patente expirada

#21.1

Patente extinta em 13/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

06/15/1993

RPI 1176

Deferimento

#9.1

03/02/1993

RPI 1161

14.4

06/16/1992

RPI 1124

Exigência - art. 36 da LPI

#6.1

10/22/1991

RPI 1090

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