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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE ÓXIDO DE ETILENO

Em AnáliseInvention Patent

Application data

Number

PI8601938

Type

Invention Patent

Filing

04/30/1986

Publication

01/06/1987

Progress at the INPI

  1. Filing04/30/86
  2. Publication01/06/87
  3. Examination04/05/88
  4. Allowance02/02/99
  5. Grant08/24/99
  6. Expired12/05/12

The letters patent expired on 12/05/2012: 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Scientific Design Company, Inc.

US

The Halcon Sd Group, Inc.

US

See this company's full portfolio

Inventors

B. O. (pessoa física)

US

Technical data

Priority claims

US

729,431 · 05/01/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.1

10/17/1989

RPI 991

14.4

10/10/1989

RPI 990

Pedido de certificado de adição de invenção

#5.1

09/13/1988

RPI 934

Solicitação de exame técnico

#4.1

04/05/1988

RPI 911

Publicação do pedido de patente

#3.1

01/06/1987

RPI 846

Pedido de patente depositado

#2.1

11/04/1986

RPI 837

Carta-patente expirada

#21.1

Patente extinta em 24/08/2009

12/05/2012

RPI 2187

Concessão da patente

#16.1

08/24/1999

RPI 1494

Deferimento

#9.1

02/02/1999

RPI 1465

Republicação - classificação IPC

#15.11

ALTERADA DE C07C27/22, B01J 23/50

12/08/1998

RPI 1457

Conhecimento de parecer técnico

#7.1

09/15/1998

RPI 1447

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