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Official data from INPI

APARELHO PARA A PRODUÇÃO DE NEGRO DE FUMO

Arquivada/ExtintaInvention PatentPCT · US1988003425

Application data

Number

PI8807385

Type

Invention Patent

Filing

10/06/1988

Publication

03/20/1990

PCT

US1988003425

Progress at the INPI

  1. Filing10/06/88
  2. Publication03/20/90
  3. Examination06/19/90
  4. Allowance09/15/98
  5. Grant12/29/98
  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: 12/18/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Columbian Chemicals Company

US

See this company's full portfolio

Inventors

A. B. (pessoa física)

US

W. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

142.478 · 01/11/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 29/12/2008

12/18/2012

RPI 2189

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

09/15/1998

RPI 1447

Exigência - art. 36 da LPI

#6.1

04/07/1998

RPI 1424

Exigência - art. 36 da LPI

#6.1

11/21/1995

RPI 1303

Solicitação de exame técnico

#4.1

06/19/1990

RPI 1023

Notificação de entrada na fase nacional - PCT

#1.3

03/20/1990

RPI 1010

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