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Official data from INPI

SISTEMA DE CIMENTO IONÔMERO FOTOCURÁVEL, E, PROCESSO PARA PREPARAR UM CIMENTO IONÔNERO CURADO

PublicadaInvention Patent

Application data

Number

PI8806957

Type

Invention Patent

Filing

12/29/1988

Publication

08/29/1989

Progress at the INPI

  1. Filing12/29/88
  2. Publication08/29/89
  3. Examination09/17/91
  4. Allowance03/04/97
  5. Grant10/28/97
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 08/29/1989. 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

S. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

139,387 · 12/30/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/29/1989

RPI 984

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 29/12/2008

12/18/2012

RPI 2189

Concessão da patente

#16.1

10/28/1997

RPI 1404

Notificação para pagamento de retribuição

#13.1

09/23/1997

RPI 1399

Deferimento

#9.1

03/04/1997

RPI 1370

Exigência - art. 36 da LPI

#6.1

02/27/1996

RPI 1317

Solicitação de exame técnico

#4.1

09/17/1991

RPI 1085

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