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Official data from INPI

CORPO DE CARBONETO CEMENTADO E PROCESSO PARA PRODUZIR O MESMO

PublicadaInvention Patent

Application data

Number

PI8901168

Type

Invention Patent

Filing

03/13/1989

Publication

10/31/1989

Progress at the INPI

  1. Filing03/13/89
  2. Publication10/31/89
  3. Examination12/26/90
  4. Allowance08/31/99
  5. Grant02/08/00
  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: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

V. C. (pessoa física)

US

See this company's full portfolio

Inventors

D. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

167,000 · 03/11/1988

US

211,197 · 06/29/1988

US

317,612 · 03/06/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/31/1989

RPI 993

Pedido de patente depositado

#2.1

05/02/1989

RPI 967

Carta-patente expirada

#21.1

Patente extinta em 08/02/2010

12/18/2012

RPI 2189

Concessão da patente

#16.1

02/08/2000

RPI 1518

Deferimento

#9.1

08/31/1999

RPI 1495

Exigência - art. 36 da LPI

#6.1

12/15/1998

RPI 1458

Exigência - art. 36 da LPI

#6.1

06/23/1998

RPI 1435

Solicitação de exame técnico

#4.1

12/26/1990

RPI 1047

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