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Official data from INPI

PROCESSO PARA PREPARAR UM COMPOSTO DE ÉSTER DE FOSFORATO E PROCESSO PARA PREPARAR UM MEIO DE GRAVAÇÃO MAGNÉTICA DE PIGMENTO/AGLUTINANTE.

Em AnáliseInvention Patent

Application data

Number

PI8604687

Type

Invention Patent

Filing

09/29/1986

Publication

06/23/1987

Progress at the INPI

  1. Filing09/29/86
  2. Publication06/23/87
  3. Examination08/22/89
  4. Allowance04/20/93
  5. Grant09/28/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

R. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

790.070 · 10/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/22/1989

RPI 983

Publicação do pedido de patente

#3.1

06/23/1987

RPI 870

Pedido de patente depositado

#2.1

03/24/1987

RPI 857

Carta-patente expirada

#21.1

Patente extinta em 29/09/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

09/28/1993

RPI 1191

Notificação para pagamento de retribuição

#13.1

08/17/1993

RPI 1185

Deferimento

#9.1

04/20/1993

RPI 1168

Exigência - art. 36 da LPI

#6.1

04/28/1992

RPI 1117

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