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Official data from INPI

COMPOSIÇÃO DE POLIÉSTER DE ALTA TRANSPARÊNCIA E BAIXA TURVAÇÃO QUE APRESENTA TAXAS APERFEIÇOADAS DE AQUECIMENTO AO INFRAVERMELHO

Em AnáliseInvention Patent

Application data

Number

PI8300753

Type

Invention Patent

Filing

02/17/1983

Publication

11/16/1983

Progress at the INPI

  1. Filing02/17/83
  2. Publication11/16/83
  3. Examination11/12/85
  4. Allowance11/27/90
  5. Grant05/28/91
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 11/12/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

B. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

351.841 · 02/24/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/12/1985

RPI 786

Publicação do pedido de patente

#3.1

11/16/1983

RPI 682

Pedido de patente depositado

#2.1

04/05/1983

RPI 650

Carta-patente expirada

#21.1

Patente extinta em 17/02/98

07/01/2008

RPI 1956

Pedido de licença compulsória

#20.1

08/31/1993

RPI 1187

Concessão da patente

#16.1

05/28/1991

RPI 1069

Notificação para pagamento de retribuição

#13.1

03/12/1991

RPI 1058

Deferimento

#9.1

11/27/1990

RPI 1043

Exigência - art. 36 da LPI

#6.1

06/05/1990

RPI 1021

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