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Official data from INPI

ARTIGO ABRASIVO, AGLOMERADO ERODÍVEL, E, PROCESSO DE PREPARAÇÃO DE AGLOMERADO ERODÍVEL.

Em AnáliseInvention Patent

Application data

Number

PI8603459

Type

Invention Patent

Filing

07/23/1986

Publication

03/04/1987

Progress at the INPI

  1. Filing07/23/86
  2. Publication03/04/87
  3. Examination04/25/89
  4. Allowance02/02/93
  5. Grant07/27/93
  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: 04/25/1989. 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

E. D. (pessoa física)

US

U. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

763,240 · 08/07/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/25/1989

RPI 966

Publicação do pedido de patente

#3.1

03/04/1987

RPI 854

Pedido de patente depositado

#2.1

02/24/1987

RPI 853

Carta-patente expirada

#21.1

Patente extinta em 23/07/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

07/27/1993

RPI 1182

Notificação para pagamento de retribuição

#13.1

05/18/1993

RPI 1172

Deferimento

#9.1

02/02/1993

RPI 1157

Republicação - classificação IPC

#15.11

11/19/1991

RPI 1094

Exigência - art. 36 da LPI

#6.1

07/30/1991

RPI 1078

6.2

01/02/1990

RPI 1000

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