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Official data from INPI

MATERIAL EM FOLHA REVESTIDO DE ABRASIVO

ArquivadaInvention Patent

Application data

Number

PI8601676

Type

Invention Patent

Filing

04/14/1986

Publication

12/16/1986

Progress at the INPI

  1. Filing04/14/86
  2. Publication12/16/86
  3. Examination07/24/90
  4. Allowance03/19/91
  5. Grant10/29/91
  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: 03/28/1989. 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. O. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

723.458 · 04/15/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

03/28/1989

RPI 962

Publicação do pedido de patente

#3.1

12/16/1986

RPI 843

Pedido de patente depositado

#2.1

10/29/1986

RPI 836

Carta-patente expirada

#21.1

Patente extinta em 14/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/29/1991

RPI 1091

Notificação para pagamento de retribuição

#13.1

07/02/1991

RPI 1074

Deferimento

#9.1

03/19/1991

RPI 1059

Solicitação de exame técnico

#4.1

07/24/1990

RPI 1025

11.8

05/15/1990

RPI 1018

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