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Official data from INPI

FIBRILA DISCRETA DE CARBONO E MÉTODO DE PRODUZIR UMA FIBRILA DISCRETA DE CARBONO

Em AnáliseInvention Patent

Application data

Number

PI8507114

Type

Invention Patent

Filing

12/04/1985

Publication

03/31/1987

Progress at the INPI

  1. Filing12/04/85
  2. Publication03/31/87
  3. Examination09/06/88
  4. Allowance04/06/93
  5. Grant10/26/93
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hyperion Catalysis International, Inc.

US

See this company's full portfolio

Inventors

H. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

678.701 · 12/06/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/06/1988

RPI 933

Notificação de entrada na fase nacional - PCT

#1.3

03/31/1987

RPI 858

Carta-patente expirada

#21.1

Patente extinta em 04/12/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/26/1993

RPI 1195

Notificação para pagamento de retribuição

#13.1

07/27/1993

RPI 1182

Deferimento

#9.1

04/06/1993

RPI 1166

Exigência - art. 36 da LPI

#6.1

10/01/1991

RPI 1087

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