(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA PREPARAÇÃO DE GRÂNULOS OU PARTÍCULAS ABRASIVAS DE CERÂMICA,E,PROCESSO DE ESMERILHAÇÃO DE UMA SUPERFÍCIE

Em AnáliseInvention Patent

Application data

Number

PI8706217

Type

Invention Patent

Filing

11/18/1987

Publication

06/21/1988

Progress at the INPI

  1. Filing11/18/87
  2. Publication06/21/88
  3. Examination10/04/88
  4. Allowance11/21/95
  5. Grant07/30/96
  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: 10/04/1988. 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

J. M. (pessoa física)

US

T. F. (pessoa física)

US

W. W. (pessoa física)

US

Technical data

Priority claims

US

932.941 · 11/20/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/04/1988

RPI 937

Publicação do pedido de patente

#3.1

06/21/1988

RPI 922

Pedido de patente depositado

#2.1

02/23/1988

RPI 905

Carta-patente expirada

#21.1

Patente extinta em 18/11/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

07/30/1996

RPI 1339

Deferimento

#9.1

11/21/1995

RPI 1303

Exigência - art. 36 da LPI

#6.1

03/21/1995

RPI 1268

Exigência - art. 36 da LPI

#6.1

08/16/1994

RPI 1237

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.