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Official data from INPI

Politereftalato de etileno glicol e processo para sua preparação.

ConcedidaInvention Patent

Application data

Number

PI8103108

Type

Invention Patent

Filing

05/19/1981

Publication

02/09/1982

Progress at the INPI

  1. Filing05/19/81
  2. Publication02/09/82
  3. Examination01/31/84
  4. Allowance01/07/86
  5. Grant06/24/86
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

B. C. (pessoa física)

R. G. (pessoa física)

V. Y. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

80 11201 · 05/20/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

05/06/1986

RPI 811

Deferimento

#9.1

01/07/1986

RPI 794

8.1

09/24/1985

RPI 779

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

01/31/1984

RPI 693

Publicação do pedido de patente

#3.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

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