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Official data from INPI

PROCESSO PARA REDUZIR O TEOR DE FERRO DE LICORES DE ALUMINATO NO PROCESSO BAYER

PublicadaInvention Patent

Application data

Number

PI8705357

Type

Invention Patent

Filing

10/08/1987

Publication

05/24/1988

Progress at the INPI

  1. Filing10/08/87
  2. Publication05/24/88
  3. Examination10/23/90
  4. Allowance05/04/93
  5. Grant10/26/93
  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: 05/24/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Cyanamid Company

US

See this company's full portfolio

Inventors

A. R. (pessoa física)

US

D. L. (pessoa física)

US

D. S. (pessoa física)

US

H. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

916.981 · 10/09/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

01/05/1988

RPI 898

Carta-patente expirada

#21.1

Patente extinta em 08/10/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/26/1993

RPI 1195

Notificação para pagamento de retribuição

#13.1

09/08/1993

RPI 1188

Deferimento

#9.1

05/04/1993

RPI 1170

Exigência - art. 36 da LPI

#6.1

10/27/1992

RPI 1143

Solicitação de exame técnico

#4.1

10/23/1990

RPI 1038

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