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Official data from INPI

MATERIAL ABRASIVO REVESTIDO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005571

Type

Invention Patent

Filing

11/01/1990

Publication

09/17/1991

Progress at the INPI

  1. Filing11/01/90
  2. Publication09/17/91
  3. Examination07/20/93
  4. Allowance02/22/00
  5. Grant07/11/00
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Norton Company

US

See this company's full portfolio

Inventors

B. L. (pessoa física)

US

R. K. (pessoa física)

US

W. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

431.400 · 11/03/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 01/11/2010

05/21/2013

RPI 2211

Republicação - classificação IPC

#15.11

Alterada da Int Cl5 C04B 35/10, 35/48; C09K 3/14.

11/21/2000

RPI 1559

Concessão da patente

#16.1

07/11/2000

RPI 1540

Deferimento

#9.1

02/22/2000

RPI 1520

Pedido de certificado de adição de invenção

#5.1

02/16/1994

RPI 1211

Solicitação de exame técnico

#4.1

07/20/1993

RPI 1181

Publicação do pedido de patente

#3.1

09/17/1991

RPI 1085

Pedido de patente depositado

#2.1

04/30/1991

RPI 1065

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