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Official data from INPI

MANDRIL DENTARIO E DISCO ABRASIVO DESTACAVEL

ConcedidaInvention Patent

Application data

Number

PI8108715

Type

Invention Patent

Filing

07/21/1980

Publication

06/01/1982

Progress at the INPI

  1. Filing07/21/80
  2. Publication06/01/82
  3. Examination02/07/84
  4. Allowance05/31/88
  5. Grant09/27/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

See this company's full portfolio

Inventors

D. R. (pessoa física)

M. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

100

05/31/1988

RPI 919

Petição de recurso

#12.2

10/20/1987

RPI 887

Indeferimento

#9.2

07/07/1987

RPI 872

Conhecimento de parecer técnico

#7.1

09/24/1985

RPI 779

Exigência - art. 36 da LPI

#6.1

11/27/1984

RPI 736

Solicitação de exame técnico

#4.1

02/07/1984

RPI 694

Notificação de entrada na fase nacional - PCT

#1.3

06/01/1982

RPI 606

Carta-patente expirada

#21.1

Patente extinta em 06/07/96

08/19/2008

RPI 1963

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