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Official data from INPI

COMPOSIÇÃO DE PÓ APERFEIÇOADA

PublicadaInvention Patent

Application data

Number

PI8705488

Type

Invention Patent

Filing

10/14/1987

Publication

05/24/1988

Progress at the INPI

  1. Filing10/14/87
  2. Publication05/24/88
  3. Examination09/25/90
  4. Allowance09/26/00
  5. Grant02/06/01
  6. Expired12/11/12

The letters patent expired on 12/11/2012: 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: 05/24/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. C. (pessoa física)

US

See this company's full portfolio

Inventors

F. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

919.047 · 10/15/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

02/23/1988

RPI 905

Carta-patente expirada

#21.1

Patente extinta em 06/02/2011

12/11/2012

RPI 2188

Concessão da patente

#16.1

02/06/2001

RPI 1570

Deferimento

#9.1

09/26/2000

RPI 1551

8.1

Referente a 10ª e 11ª anuidade

12/01/1998

RPI 1456

Exigência - art. 36 da LPI

#6.1

11/21/1995

RPI 1303

Exigência - art. 36 da LPI

#6.1

03/01/1995

RPI 1265

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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