Heuchera Patents (Class PLT/440)
  • Publication number: 20200022297
    Abstract: A new and distinct cultivar of Heuchera plant named ‘IFHEPR’, characterized by its compact and uniformly mounded plant habit; relatively rapid growth rate; densely foliated and bushy appearance; greyed red-colored leaves; long flowering period; numerous inflorescences with sterile light purple-colored flowers; and good garden performance and winter hardiness.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 16, 2020
    Applicant: INNOFLORA PLANT BREEDING B.V.
    Inventor: JELLE van den HAAK
  • Publication number: 20200022298
    Abstract: A new and distinct cultivar of Heuchera plant named ‘IFHEHB’, characterized by its compact and uniformly mounded plant habit; relatively rapid growth rate; densely foliated and bushy appearance; silvery purple-colored leaves; long flowering period; numerous inflorescences with sterile light red purple-colored flowers; and good garden performance and winter hardiness.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 16, 2020
    Applicant: INNOFLORA PLANT BREEDING B.V.
    Inventor: Jelle van den Haak
  • Publication number: 20200022299
    Abstract: A new and distinct cultivar of Heuchera plant named ‘IFHEMUL’, characterized by its compact and uniformly mounded plant habit; relatively rapid growth rate; densely foliated and bushy appearance; glossy purple-colored leaves with dark purple, almost black-colored venation; long flowering period; numerous inflorescences with sterile greyed orange-colored flowers; and good garden performance and winter hardiness.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 16, 2020
    Applicant: INNOFLORA PLANT BREEDING B.V.
    Inventor: Jelle van den Haak
  • Publication number: 20180177102
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Electric Plum’ with cordate, dark, blackish-purple, shallowly dissected foliage in early spring developing into plum-purple blush with contrasting blackish purple surrounding the veins. The new plant is adorned with blackish purple panicles beginning in early summer with bright fuchsia-pink flowers beginning early summer for about seven weeks with repeat panicles.
    Type: Application
    Filed: December 21, 2016
    Publication date: June 21, 2018
    Applicant: Walters Gardens, Inc.
    Inventor: Hans A. Hansen
  • Publication number: 20180168089
    Abstract: A new and distinct Heuchera plant characterized by amber colored leaves, medium size, slightly lobed, geranium-like leaves, yellow green flowers in short spikes in spring, not free flowering, good sun tolerance, a medium large, mounding habit with excellent crown count, and excellent vigor.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 14, 2018
    Applicant: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Publication number: 20180168090
    Abstract: A new and distinct Heuchera plant characterized by dark red to burgundy colored leaves, medium size, slightly lobed, geranium-like leaves, yellow green flowers in short spikes in spring, good sun tolerance, a medium large, mounding habit with excellent crown count, and excellent vigor.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 14, 2018
    Applicant: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Publication number: 20180146608
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Black Pearl’ with foliage of glossy, dark mahogany-purple, scalloped ruffled margins, rosy purple underside and no silver or dark green marbling surrounding the veins. ‘Black Pearl’ is topped with heavily-branched panicles of overall pink flowering effective over a long period. The new plant is vigorous, compact in habit and tolerates heat and humidity well.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Applicant: Walters Gardens, Inc.
    Inventor: Hans A. Hansen
  • Publication number: 20180146607
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Pretty Pistachio’ with foliage of yellowish lime green in summer. The new plant has medium a pink flower effect from showy persistent calyces and six to nine week flowering period. The new plant is vigorous, and produces large clumps and is useful in the landscape, in containers or as cut flower.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Applicant: Walters Gardens, Inc.
    Inventor: Hans A. Hansen
  • Publication number: 20180146605
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Wild Rose’ with large foliage with rounded apices and lobe, leaf blades of rosy-purple with dark mahogany surrounding the veins and without silver overlay between the veins. Panicles are dark burgundy with matching buds that open for a rosy-pink effect for five weeks beginning late spring. The new plant is vigorous and produces large clumps with many large leaves.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Applicant: Walters Gardens, Inc.
    Inventor: Hans A. Hansen
  • Publication number: 20180146606
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Appletini’ with cordate foliage of lime green to light chartreuse with a thick silver overlay between the veins on top surface and slight rosy blush underneath in the fall and strong yellowish pink in the spring. Large flowers are deep rich red on compact panicles with some reblooming in the fall. The new plant is vigorous, compact in leaf and flower habit and suitable for use in the landscape en masse, an accent or in containers or cut flowers.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 24, 2018
    Applicant: Walters Gardens, Inc.
    Inventor: Hans A. Hansen
  • Publication number: 20170215323
    Abstract: A new and distinct cultivar of Heuchera plant named ‘Boysenberry’, characterized by its compact and uniformly mounded plant habit; densely foliated and bushy appearance; reddish brown-colored leaves; and good garden performance.
    Type: Application
    Filed: January 23, 2016
    Publication date: July 27, 2017
    Applicant: GOOTJES-ALLPLANT B.V.
    Inventor: Jelle van den HAAK
  • Patent number: PP28431
    Abstract: A new cultivar of hybrid Heuchera named ‘Carmencita’ that is characterized by its floriferous blooming habit, its long flowering period, its compact plant habit, its good sun tolerance with very little to no scorching observed and its foliage that is red-purple in color with a glossy surface.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: September 19, 2017
    Assignee: SANDRINE DELABROYE
    Inventor: Thierry Delabroye
  • Patent number: PP28463
    Abstract: A new cultivar of hybrid Heuchera named ‘Guacamole’, characterized by its leaves that are large in size, its strong growth habit, its late blooming period, its higher sun tolerance than is typical of Heuchera cultivars with light colored foliage, and its resistance to powdery mildew.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: September 26, 2017
    Assignee: SANDRINE DELABROYE
    Inventor: Thierry Delabroye
  • Patent number: PP28574
    Abstract: A new and distinct cultivar of Heuchera plant named ‘Gojiberry’, characterized by its compact and uniformly mounded plant habit; densely foliated and bushy appearance; reddish brown-colored leaves that with development become yellow orange in color; and good garden performance.
    Type: Grant
    Filed: January 23, 2016
    Date of Patent: October 24, 2017
    Assignee: Gootjes-Allplant B.V.
    Inventor: Jelle van den Haak
  • Patent number: PP28575
    Abstract: A new and distinct cultivar of Heuchera plant named ‘Boysenberry’, characterized by its compact and uniformly mounded plant habit; densely foliated and bushy appearance; reddish brown-colored leaves; and good garden performance.
    Type: Grant
    Filed: January 23, 2016
    Date of Patent: October 24, 2017
    Assignee: Gootjes-Allplant B.V.
    Inventor: Jelle van den Haak
  • Patent number: PP28687
    Abstract: A new cultivar of hybrid Heuchera named ‘Plum Power’, characterized by its unique foliage with leaves that are purple in color with a silver sheen, its large leaves, and its re-blooming habit; blooming from April to November in The Netherlands.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: November 21, 2017
    Inventor: Lucas Klinkhamer
  • Patent number: PP28828
    Abstract: A new and distinct cultivar of Heuchera plant named ‘Coralberry’, characterized by its compact and uniformly mounded plant habit; densely foliated and bushy appearance; dark pink-colored leaves; and good garden performance.
    Type: Grant
    Filed: January 23, 2016
    Date of Patent: December 26, 2017
    Assignee: Gootjes-Allplant B.V.
    Inventor: Jelle van den Haak
  • Patent number: PP28899
    Abstract: A new cultivar of hybrid Heuchera named ‘Red Pearls’, characterized by its leaves that are silvery bronze in color, its early blooming flowers that are red in color and its vigorous and healthy plant habit.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 23, 2018
    Inventor: Thierry Delabroye
  • Patent number: PP29116
    Abstract: A new cultivar of hybrid Heuchera named ‘Magma’ that is characterized by its unique conspicuous leaves that are red in color, its leaves that are very large in size and its vigorous and healthy growth habit.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: March 13, 2018
    Inventor: Thierry Delabroye
  • Patent number: PP29162
    Abstract: A new and distinct Heuchera plant characterized by yellow to lime colored leaves, medium large, slightly lobed, geranium like leaves, rust red flowers in narrow spikes in spring on upright flowering stems, good sun tolerance, a large, mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: March 27, 2018
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP29207
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Silver Gumdrop’ with small cordate leaf blades of intensely silver coloring and very thin dark green surrounding the veins. Foliage has rounded apices and shallowly-cleft lobe and develops a complementary rosy blush by mid-summer. The burgundy-colored panicle has short branches producing vibrant pink flowers from early to late summer. The new plant is vigorous and compact in habit.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: April 3, 2018
    Assignee: Walters Gardens Inc
    Inventor: Hans A. Hansen
  • Patent number: PP29298
    Abstract: A new cultivar of hybrid Heuchera named ‘Red Sea’, characterized by its leaves that are red in color with wavy margins and a glossy surface, and its early flowering season that continues throughout the summer.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: May 15, 2018
    Inventor: Diederik Alexander Maria Scheys
  • Patent number: PP29299
    Abstract: A new cultivar of Heuchera named ‘Flores Sea’, characterized by its remontant blooming habit, its dense flower panicles, its very large flowers that are pink in color, and its leaf coloration that is silver with dark olive veins.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: May 15, 2018
    Inventor: Diederik Alexander Maria Scheys
  • Patent number: PP29361
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Pretty Pistachio’ with foliage of yellowish lime green in summer. The new plant has medium a pink flower effect from showy persistent calyces and six to nine week flowering period. The new plant is vigorous, and produces large clumps and is useful in the landscape, in containers or as cut flower.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: June 5, 2018
    Assignee: Walters Gardens Inc
    Inventor: Hans A. Hansen
  • Patent number: PP29395
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Black Pearl’ with foliage of glossy, dark mahogany-purple, scalloped ruffled margins, rosy purple underside and no silver or dark green marbling surrounding the veins. ‘Black Pearl’ is topped with heavily-branched panicles of overall pink flowering effective over a long period. The new plant is vigorous, compact in habit and tolerates heat and humidity well.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: June 12, 2018
    Assignee: Walters Gardens Inc
    Inventor: Hans A. Hansen
  • Patent number: PP29396
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Appletini’ with cordate foliage of lime green to light chartreuse with a thick silver overlay between the veins on top surface and slight rosy blush underneath in the fall and strong yellowish pink in the spring. Large flowers are deep rich red on compact panicles with some reblooming in the fall. The new plant is vigorous, compact in leaf and flower habit and suitable for use in the landscape en masse, an accent or in containers or cut flowers.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: June 12, 2018
    Assignee: Walters Gardens Inc.
    Inventor: Hans A. Hansen
  • Patent number: PP29397
    Abstract: A new and distinct Heuchera plant characterized by amber colored leaves, medium size, slightly lobed, geranium-like leaves, yellow green flowers in short spikes in spring, not free flowering, good sun tolerance, a medium large, mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: June 12, 2018
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP29420
    Abstract: A new and distinct Heuchera plant characterized by dark red to burgundy colored leaves, medium size, slightly lobed, geranium-like leaves, yellow green flowers in short spikes in spring, good sun tolerance, a medium large, mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: June 19, 2018
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP29632
    Abstract: A new and distinct Heuchera plant characterized by purple to silver colored leaves with dark to green veins, medium large, slightly lobed, geranium-like leaves, light pink flowers in spring on upright flowering stems in spring on upright flowering stems, good sun tolerance, a large, mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: August 28, 2018
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP29644
    Abstract: A new and distinct Heuchera plant characterized by glossy, red to burgundy colored leaves, medium size, lobed and lightly ruffled leaves, small pink flowers in short spikes in August, good sun tolerance, a medium, low mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: September 4, 2018
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP29923
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Wild Rose’ with large foliage with rounded apices and lobe, leaf blades of rosy-purple with dark mahogany surrounding the veins and without silver overlay between the veins. Panicles are dark burgundy with matching buds that open for a rosy-pink effect for five weeks beginning late spring. The new plant is vigorous and produces large clumps with many large leaves.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 27, 2018
    Assignee: Walters Gardens, Inc
    Inventor: Hans A. Hansen
  • Patent number: PP29924
    Abstract: A new and distinct hybrid of Heuchera plant named ‘Electric Plum’ with cordate, dark, blackish-purple, shallowly dissected foliage in early spring developing into plum-purple blush with contrasting blackish purple surrounding the veins. The new plant is adorned with blackish purple panicles beginning in early summer with bright fuchsia-pink flowers beginning early summer for about seven weeks with repeat panicles.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: November 27, 2018
    Assignee: Walters Gardens, Inc
    Inventor: Hans A. Hansen
  • Patent number: PP29981
    Abstract: A new cultivar of Heuchera named ‘Orange Dream’ that is characterized by its compact plant habit, its leaves that are orange in color and its flowers that are white in color.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: December 11, 2018
    Inventor: Thierry Delabroye
  • Patent number: PP30412
    Abstract: A new and distinct cultivar of Heuchera plant named ‘Rex Peppermint’, characterized by its uniformly mounded plant habit; densely foliated and bushy appearance; greyed green-colored leaves; long flowering period; numerous inflorescences with sterile red purple-colored flowers; relative low sensitivity to Powdery Mildew; and good garden performance.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 16, 2019
    Assignee: AB Kwekersrechten B.V.
    Inventor: Henricus Maria Joseph Holtmaat
  • Patent number: PP30443
    Abstract: A new and distinct cultivar of Heuchera plant named ‘Rex Purple’, characterized by its uniformly mounded plant habit; densely foliated and bushy appearance; greyed purple-colored leaves; long flowering period; numerous inflorescences with sterile white and red purple-colored flowers; resistance to Powdery Mildew; and good garden performance.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 23, 2019
    Assignee: AB Kwekersrechten B.V.
    Inventor: Henricus Maria Joseph Holtmaat
  • Patent number: PP30568
    Abstract: A new and distinct Heuchera plant characterized by purple to silver colored leaves, medium size, slightly lobed, geranium-like leaves, light pink flowers, good sun and shade tolerance, a medium-large, mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: June 11, 2019
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP30583
    Abstract: A new and distinct Heuchera plant characterized by brown-black to black colored leaves, medium large, geranium-like leaves, very light pink flowers on upright flowering stems, good cold and sun tolerance, a large, mounding habit with excellent crown count, and excellent vigor.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: June 18, 2019
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP30618
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Twist of Lime’ with cordate foliage of bright yellowish lime green in summer, slightly cupped and with a crisped mucronulate margin. The new plant has chartreuse calyces that develop reddish tint along with the reddish styles on older flowers. The new plant is vigorous, and produces dense compact clumps and is useful in the landscape or in containers.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: June 25, 2019
    Assignee: Walters Gardens, Inc
    Inventor: Hans A Hansen
  • Patent number: PP30843
    Abstract: A new and distinct Heuchera plant characterized by better sun tolerance compared to other known yellow foliage cultivars, white flowers on medium short spikes, full crown of lime-green spring leaves that turn to yellow in the sun, medium-small mounding habit, and excellent vigor.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 20, 2019
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP30922
    Abstract: A new and distinct Heuchera plant characterized by purple black to black leaf color, large leaves with slightly ruffled and rounded lobes, very light pink flowers on upright flowering stems, performing well in sun or shade, a large, tall mounding habit with an excellent crown count, and excellent vigor.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: October 1, 2019
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP30932
    Abstract: A new and distinct Heuchera plant characterized by a large habit with leaves that are purple and ruffled, great performance in the landscape or as a container plant, great winter foliage color and hardiness, a high crown count, and excellent vigor.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: October 8, 2019
    Assignee: Terra Nova Nurseries, Inc.
    Inventor: Janet N. Egger
  • Patent number: PP31100
    Abstract: A new cultivar of Heuchera named ‘High Hopes’ that is characterized by its leaves that are very large in size, its leaves that are green-yellow in color with brown orange veins, its flowers that are creamy white in color, its healthy and vigorous growth habit and its high tolerance to heat.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 19, 2019
    Inventor: Thierry Delabroye
  • Patent number: PP31101
    Abstract: A new cultivar of Heuchera named ‘Maple Leaf’ that is characterized by its glossy young leaves, its flowers that are white in color and its unique foliage that is orange in color.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 19, 2019
    Inventor: Thierry Delabroye
  • Patent number: PP31221
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Apple Twist’ with medium sinuate margined foliage with rounded apices and lobes. The spring leaf blades begin the reddish bronze between the veins and later mature to an apple green with random silver overlay between the veins. Branched panicles produce creamy green floral effect for about five weeks in mid-summer. The new plant is vigorous and produces large clumps with many large leaves.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 10, 2019
    Assignee: Walters Gardens Inc
    Inventor: Hans A Hansen
  • Patent number: PP31222
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Wildberry’ with many large, rounded-palmate, shallowly dissected foliage and large, dense, mounded habit. The leaf blades are deep to strong purplish-red with darker greyed purple surrounding veins. Branched panicles produce complimentary strong purplish-red calyces and flower effect for about five weeks beginning mid-summer. The new plant is vigorous and produces large clumps with many large leaves.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 10, 2019
    Assignee: Walters Gardens Inc.
    Inventor: Hans A Hansen
  • Patent number: PP31223
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Lemon Love’ with rounded leaf blades, moderately dissected, slightly sinuate, of bright yellow in spring becoming chartreuse in summer. The new plant has pink-tipped calyces on mostly upright highly branched panicles. The new plant is vigorous, and produces large clumps with many dense leaves and is useful in the landscape or in containers.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: December 10, 2019
    Assignee: Walters Gardens Inc
    Inventor: Hans A Hansen
  • Patent number: PP31224
    Abstract: The new and distinct hybrid of Heuchera plant named Heuchera ‘Pink Panther’ with large distinct foliage. The new plant is vigorous and produces large broadly-mounded clumps.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: December 10, 2019
    Assignee: Walters Gardens Inc.
    Inventor: Hans A Hansen
  • Patent number: PP31281
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Spearmint’ with medium mostly flat foliage with rounded apices and shallowly dissected lobes. The leaf blades are without purplish undertones on top or below and develop a heavy silver overlay covering all but the dark green veins. Branched panicles are deep burgundy displaying two-tone dark pink and light pink calyces with light pinkish petals for about five weeks beginning mid-summer. The new plant is vigorous and produces large clumps with many large leaves.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: December 24, 2019
    Assignee: Walters Garden Inc
    Inventor: Hans A Hansen
  • Patent number: PP31395
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Mahogany Monster’ with very large foliage having rounded apices and lobes, leaf blades begin the season deep glowing red and develop to dark mahogany without silver overlay surrounding the veins. Numerous, densely-branched, stiff, erect, very large, wine-colored panicles display bright pink calyces with near white petals for about five weeks beginning late spring and repeating through the summer. The new plant is vigorous and produces large broadly-mounded clumps.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: January 21, 2020
    Assignee: Walters Gardens, Inc
    Inventor: Hans A Hansen
  • Patent number: PP31396
    Abstract: The new and distinct hybrid of Heuchera plant named ‘Cherry Truffles’ with large sinuate foliage with rounded apices and lobes, leaf blades begin the season bright red and develop to deep cherry mahogany without silver overlay surrounding the veins. Branched panicles are deep burgundy displaying bright pink calyces and pale pink petals for about five weeks beginning late spring and repeating through the summer. The new plant is vigorous and produces large clumps with many large leaves.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: January 21, 2020
    Assignee: Walters Gardens, Inc
    Inventor: Hans A Hansen